You have to admit that with these karma changes she deals less damage. In the live version the RW and Q combo makes you survive in a solo lane when the enemy is trying to go too deep and trying to kill you, but now the PBE version the combo is different, she wont not heal enough to survive i tried in the PBE, and her shield heath reduction is not that much but it kinda make a difference since she no longer has a good heal to use if you're in danger.
I have agree with Raleko (NA) her change is more focused on the support utility than on her damage. now the only damage skill in team fights is her Q. karma can throw her R+Q of course it has a good range, but if you spam Q the distance is enough for any champion to get into karma. it feals almost the same exept that you might not survive in team fights compared to the live server karma.
One more thing, i don't understand why are they taking that unique mechanic from her kit. her R+E is what really makes karma "karma" and not "a completely new champion" that they created.
I would try karma tank supp, that utility buff it's really good with the utility support build and it's actually really good cuz she can protect her ad and her team very well with this she will be a great support, kinda weak early game but strong late game.