I wouldn't make that assumption under Rex, but at this point I am as far from a Rex fan as you're going to find.
But, perhaps, this may be the difference between the Rex offense, and the McD offense-- less of an option offense? In which case, I agree with you and Kirby that this offense may not be a better fit for the Taylor we have seen, unless he can adapt to it. But, if Dennison designs an offense that uses quick routes, including slants to the middle, that also allows for TT's mobility... then this could be a fun season.