One last thing. I actually wanted the answers.
If you still want to find the answers... they are still there to be found. If you are still open to finding something in the forms, besides aesthetics... there are some ways to go about finding those answers. If you don't want to find the answers any more... you could skip the rest of this post....
If you always do the same thing, you will always get the same result. You have been asking the same questions, in the same framework and you keep finding the same answers. The first step, would be to change your framework... think outside your box. Lets start here:
- The technique must be done as in the form (otherwise the form would need to teach the variants to be practical)
- The application must make sense (otherwise the form is a detriment if used as a fighting blueprint)
(not sure why it changed your numbers to bullets...)
The first change is the idea that forms are to be "used as a fighting blueprint." They are not to be used as a fighting blueprint. They are a form of training. Boxers train by jumping rope. Jumping rope is not a blueprint for fighting. The technique for jumping rope is never seen in a fight done exactly as it is done when training. BJJ guys lay on their back and shrimp across the mat... they go left side, right side left side moving linearly down the mat. You will never see this done in a BJJ match or MMA fight. It is also not a blueprint for fighting. While the shrimping technique will be seen in fights, it is rarely if ever done exactly as it is done at the beginning of class. All these things are training tools. They teach skills, and principles and ideas that can be used in fighting. The better you understand the principles, the more ways you can use the principles and skills in a fight.
Lets look at some form stuff. In the forms, we find lots of times where you step forward into front stance while punching. The back leg is straight with the heel down. Exactly how people fighting, hardly ever do. Picking the heel up, bending the knee and driving through the punch is very effective at creating power. However, there is more than one way to develop power. When stepping forward, you are moving your center forward. This creates a bunch of momentum. Done right, if you can harness that momentum and put that into a punch, you can get a pretty powerful punch, without a lot of muscle energy. As you drop down into the front stance, you are lowering your body... again another way to generate power, if you can harness it. Another thing going on is the rotation of the body, generating power. To deliver this power, there must be a root on one side (that rear leg with the heel down). In doing that form version of the punch, you are learning to generate and harvest the power of your momentum, your weight dropping and the rotation. In application, pick the heel up and drive with the back leg... adding in the weight drop, the body momentum and the rotation together.
Looking further at the forms... when we step forward into front stance, we do a number of different things. Lunge punch, reverse punch, down block, up block, mid block inside out and outside in. We also have "composure" moves where you are slowly pressing forward. This allows us to practice generating power quickly and explosively (punches and blocks) and slowly over time ("composure" moves). The punches can go low, middle high. The power can be delivered straight, up to down, down to up, with either hand, and inside out or outside in. Now, there are slight differences in how you harness and transmit that power for each of these... which is why they are included. This then becomes a study of how to generate, harness and transmit the energy. Most of the work is internal. Your legs and pelvis make a very good solid structure. Your shoulders and rib cage make a very solid structure. The two are not very well connected. The spine is the only bone connecting them and it moves in every direction. We also have soft squishy stuff and muscle. Learning to use which muscles, when and how, to connect the upper structure to the lower structure all happens inside. The better you can do that, the better you can generate, harness and deliver power. The is actually a lot going on in these simple and easy to do techniques.
Then you can look at the order and find things in the order. Our first kata starts out: 90 degree left turn, stepping forward into down block, step forward into front stance with lunge punch, 180 degree right turn, step forward into front stance, down block, step forward into front stance with lunge punch, 90 degree left turn, stepping forward with down block, the 3 lunge punches each stepping into front stance. Why that particular order? What can be learned from that pattern of moves? Close distance after you block. (note how I am even using a block as a block here) The best time to close distance, is after they have thrown an attack and before they have recovered. We are drilling in the idea that you close distance quickly (with the lunge punch) but you don't do it blindly, you close behind a technique that keeps the other guy occupied. Blocking their attack and moving behind is a pretty good one to start with. It gets better if that block, can be an attack or take their balance. Many people have to really over come some things, in order to move towards their attacker. Then there is the idea that you set a pattern (down block, punch... down block, punch) and then break the pattern (down block, punch-punch-punch). These are all ideas that can be studied here, while also working on the power issues from above. These ideas and concepts can then show up in any number of places. Just like the power generated can be used in a bunch of different ways.
If you look at the forms, and get rid of the idea that it is for aesthetics... You can look and see what things you can learn. Look closely at the details... but not just those details but the effect of those details. Could those details be over emphasizing and effect elsewhere in your body? Can that effect be used in fighting? Can you learn to take the effect produced by the details in the form, and use that effect?
Look, if you want to just memorize details and conclude that forms are not a blueprint for fighting... thats fine. It won't effect my training at all. But, if you want to appreciate what is in the forms and see what it could do... you are going to have to take a different approach than the one you have been taking... or you will continue to get the same results.