It's a cool idea, but this basically sneaks new features into the Python language through a backdoor, bypassing the public review/feedback process. I would suggest the author create a PEP for these features instead.
Although that level of fragmentation you do talk about is plausible - I'd find it simultaneously disheartening and worth a bit of a chuckle. (I'm reminded of all of the concurrency abstractions CL seems "capable of" hosting with minimal friction - but none with definite thrust.)