One of the big issues is there is a heap of legacy cruft in the existing X Stack which makes trying to fix/enhance X difficult. From what I understand the way i

One of the big issues is there is a heap of legacy cruft in the existing X Stack which makes trying to fix/enhance X difficult. From what I understand the way it is written not easy to cleanly depreciate certain features like you've suggested. So I can totally see the appeal for a clean break from having to maintain strict backwards compatibility with a stack that has its roots in the 1980's.