My opinion sucks.
Jenos has always been good with Luminary; damage buff is too good, his healing capabilities are amazing with a well coordinated team, and he can reposition easily. His only fear is a flank like Vora, Evie, or Maeve. Cassie's kit is crazy, she can burst for ~2100 in under 2 seconds, has great mobility, great cards, and her abilities are extremely useful. Atlas has amazing CC and utility, pretty much unkillable with a well positioned support. Vora has crazy movement with multiple tendrils and her DoT gives her great disabling capabilities versus other dangerous poking champs (like Cassie).
Seris has always been good to me, but now more than ever. She can out heal pretty much anyone, though she doesn't offer as much utility as Jenos. Imani has crazy movement, crazy damage, and adequate cc. Yagorath is a good off tank; very annoying when positioned in enemy backlines. Barik as always has great utility and damage, mainly due to his loadouts.
Ying is really good in the proper hands. The supports and frontlines here are solid picks for utility. The damages here are really good, but lack great movement and are easily outplayed. The flanks here have had a rough time with nerfs in the past, but are still good in the hands of someone who utilizes movement well.
Corvus, despite nerfs, is still decent; he doesn't offer as much healing potential as Seris or as much utility as Jenos, but he carries his weight. Grohk strong, Grohk make stacks die. Damages here are strong but heavily lack movement. Fernando is solid as always, he is just outshined by most other frontlines. Maeve and Androxus have had their times, but currently they feel situational. Andro lacks the burst he used to have, and Maeve can be easily outplayed.
Pip is actually alright with his revamped talents. and he's always had good cards. Drogoz gets countered hard by hitscan and it's pretty much the only reason he's this low. A well-positioned Dredge is a force to be reckoned with, especially when you can hit highly mobile flanks with your left click and harpoon. Inara is just bad compared to what she was a few patches ago; she used to carry and now she feels like she needs a pocket to carry.
Bomb King has the same flaws he's always had: server latency and crazy skill cap. Viktor is easily out maneuvered, same with Buck and Lex. Discovery Lex can actually be pretty crazy with the proper player.
Io dog no good no more. Raum is what I would consider "fun" but not great.
Talus can be annoying as a poke playstyle, but that seems to be about it. Moji can really mess up an unsuspecting player, but in high ELO he gets outplayed very easily.
Vivian and Strix got nerfed into the ground.
Koga go zoom. Koga go brrt, but not too brrt. Just buy illuminate and Skye loses.