I think the fact that there will be real, tangible Stormtrooper armor in the film (unlike the prequels, where they were ALL lazily CGI) is enough to get anyone super excited.

I expect to still see just a few of the OT-style armor in some of the unimportant outer reaches of the galaxy (let alone for nostalgia), but I definitely agree we will see the next evolution of their armor. And we can safely assume when they designed the new changes to the armor, they took note of their humiliating defeat to the pint-sized Ewoks - no way do they want a repeat of that circus act :)