At worst harder, but not impossible.
LOL are you not following this thread? What easy way forward do you see emerging for the block size issue?
If the ISO can finally manage to crank out C++11, despite the contentious issues and compromises that were ultimately required (and C++14 just two months ago too!), pretty much anything is possible IMO.
That's for a programming language not a protocol. Also see
Andreas Antonopoulos's comment on ossification considering hardware, which I also agree with.