Too late if you ask me, let me explain:

Programming languages are hard to change, very hard, because it will certainly break programs written in it in many places. So if you want a programming language with a vision you should start with it, or simply accept it has no vision and it merely goes with the whim of its maintainers. The latter is what I believe happened to PHP. No biggy, there are plenty of languages that do have strong visions and are very suitable for web-development; just move on.

If PHP was to implement a vision, it would soon not be PHP anymore, whether that is a good thing is up to the users of that language. In that case I foretell a hack of a lot of porting effort and a fork (facebook?)... :)