My gamestyle has quite evolved the last week end, a lot more sweeps, more patience.
And fireballs are not really a problem, you just have to guard them, and slowly walk between each projectile. Once you have one ex you can jump freely on your opponent and start applying your pressure.
Same thing, you don't really need meter, it's charging naturally while guarding or guard pressings, I was using it only for Ex hienzan, qcfqcf.B reversals, air qcb.BD and some killing combo.
It's still not in my game but I MUST spend more in break rolls to punish things or reverse a corner pressure at my advantage.
Have unsafe special moves isn't relevant since you don't let your opponent guard them.
Today I don't see the cons of playing Kim (except the fact some char are overall a bit better), the char is really strong and quite unique in his style. He just doesn't have some tools such has command throw and long range invincible move, but he doesn't need them.