Steve
Mostly Harmless
My opinion is that you already know what you'd like to do and have made a decision on some level, likely at a subconscious level. Now, you're gathering information that either supports or contradicts this decision. The mixed opinions on this board are confusing because we've all been in your shoes and we've all made choices. Here's the thing. We're all (well, mostly) happy people. Some of us cross train. Some don't. Some did and didn't like it. Some did and loved it. Some never did and some haven't yet but want to. Point is, we're all still training and still learning and still enjoying what we're doing.
My advice is to do what you want to do. This is about personal fulfillment and enjoyment. It may very well be that studying a different style will prolong your journey in Tai Chi. So what? Have fun. Do what is going to make you happy. If that means focusing on one style so that you can be an expert in the shortest amount of time, great! If it means studying a wide range of styles, have a blast.
Frankly, it sounds like you're looking for some variety and would like to mix things up a little bit. It's your journey. Enjoy it.
My advice is to do what you want to do. This is about personal fulfillment and enjoyment. It may very well be that studying a different style will prolong your journey in Tai Chi. So what? Have fun. Do what is going to make you happy. If that means focusing on one style so that you can be an expert in the shortest amount of time, great! If it means studying a wide range of styles, have a blast.
Frankly, it sounds like you're looking for some variety and would like to mix things up a little bit. It's your journey. Enjoy it.