that if there is no Pro2, 3, …
Oh wash your mouth out with soap for speaking such dirty words! :O
Then again, I agree that its successor needs a catchier name. How about Droid 5? :P
At any rate, I'm sure good custom ROMs for this will keep this alive at least as long as the Droid 4 (it just lost mainstream support recently at 7 years old) and by then this outfit should have at least 2 new devices out, featuring newer processors, a flat screen option for those who prefer it, and keyboard layouts tweaked based on user feedback. :)