Bingo. Whats fun is if you really look, you can find all kinds of fun ways to make small modifications to one technique to get anouther. Like change the angle, rotate your hips, alter the height, change the angle, so on. I've done that and come up with several new techinques to my circulum. The same could be done with many forms and all drills, so as to gain a deeper understanding of the matterial.
There's a reason I say "Kata should be your Martial God" keep in mind, you could easily make the argument that drills are 2 person forms.
Just as long as the concepts don't clash. You mentioned "change the angle". That's limited because one of the main concepts of WC is to remain square and centered and to not bob around everywhere. If you're talking about stepping in and looking for another line of attack by using the new angle....then yeah, that's correct.