It's hilarious how people think this proxy Singed is viable. Capitilize on the fact he dies a lot, build Sword of the Occult / Mejai's and snowball out of control, heck. Play something that can tank creeps and becomes god mode with farm (read: Tryndamere). The whole point of this strat is to take global objectives, which in most solo queue games (even up in Diamond tier) just won't happen because people can't coordinate properly.
On the Kha'zix changes, sad to see that Spikes can't be cast while leaping, felt awesome jumping on someone head and spiking them as you did it. Still think W will be evolved since evolving Q is useless unless you're against a ridiculously high hp tank.