About the Jayce changes. . .
The 6 ranks thing has been tried before. It doesn't work. In order to smooth out the power curve, the first five all have to be made weaker which leads to an unsatisfying experience overall. This was even tested, if you recall. On that 1 champion that Riot deleted.
From that champion, we also learned:
Gaining power at lower health is counter-intuitive and frustrating.

Kits that have power tied into allied interaction is bad design.

Intended supports should never leave bottom lane.
(Still going top.)
(But anyone else going support is perfectly fine.)
removing champs from the free-to-play rotation results in them becoming more obscure.
(OK, Yorik is intentional. I just wanted to bring this back up.)
Really strong lane bullies shouldn't have really safe play metrics.

EDIT: Supports shouldn't have to rely on gold income to reach end game. Season 4.
So. . . Of all the things that made karma unworkable. . . What's left that hasn't been blatantly contradicted at this point?
EDIT: clarity.
EDIT: Some people seem to be getting confused about the target of this topic. I'm not targeting Jayce. My complaint is about the specific change being made. This post sums it up nicely (without all the extra QQ).
Its frustrating to see that Jayce is getting the Rank 6 Buff/No nerfs to Earlier Ranks that Karma couldn't have. All due to a Design Philosophy that was being contradicted.
Maybe? [/joke]
Jungle
Mid
ADC
Support
top
Jungle
ADC
Support