For the ones who complain about how unplayable she is -
If you guys couldn't win without a character who could hide beneath a turret without any consequence, you'll had no skill to begin with. Akali is not useless from having her stealth or healing removed, like Yasuo she had an overloaded kit which has now been fixed.
Akali is no longer the uber safe character she once was and new requires a bit more skill to play. At the moment she isn't playing any riskier than what Katarina and Diana players have been at for ages. If anything, I expect Akali's win rate to rise once those who were looking to abuse a safe character stop playing her and she's only picked up by those who actually want to express their skill.