Cleaver is fine now. With the armor and magic pen aura removed, the pen changes have largley balanced out.
Adding in warmogs would just reinforce the tank bruiser Meta that was prevalent months ago. I for one do not want to return to that.
As for adding global cdr aura to the map, I'm not really sure what this change is intended to do. Who would benefit from this the most? Immediately I'd imagine items like Ionian boots could be entirely removed most builds in favor of tankier options. Mages would have a better early game, but so would ad casters...
On the plus side, for champions that need to hit the cdr cap as quickly as possible, this could free up itemization options, allowing them to build more offensively or defensively without feeling limited by the lack of decent cdr options. So perhaps we should try it.