I agree that being a multiple offense is an identity.
I think if we had a more veteran and savvy quarterback instead of a freshman that already has more than he can handle on his plate, we would be able to see more creativity instead of having to rely on the same things over and over. When we are limited as we are, then we have to be multiple within a narrow scope, which is more difficult. Whole premise of starting Taylor is that while it could cut down the playbook, he will use his legs and do damage enough to make it worth it, and that's been true enough before he got hurt.
I also think you don't need dozens of completely different formations or types of plays (what RB would we have that specializes in a toss sweep, for instance? If Helu and Burkhead are both better up-the-middle in their own way) to really change it up - but smaller things might just be too invisible to notice. Like, I could not tell you about the new completely looks and new routes we threw out against Texas that they were unprepared for, before reading someone else say it's the case. Opinions can vary on some of that stuff, but I can't help but try to piece my own opinions from that rather than my own limited knowledge of the game.