Do you guys think ZSS is ready to go up a tier? I don't think she should gain any spots necessarily, just that she's a good candidate for B tier, similarly to how Toon Link was bumped up to high tier a while back.
ZSS mains have been doing all kinds of work compared to a few years ago, and that's hard to deny. They've made immense progress and showed that she isn't a character that is countered by lolshields or Falco. It's also hard to deny ZSS' incredible and dangerous mix-up potential, deceptively high damage output, dirty off-stage pressure, good recovery, and superior mobility. She also has an awesome MC making her pretty resilient for her weight class. She still has her weaknesses (shield pressure is sometimes a problem, and dat grab), of course but I think the strengths are really shining.
I'd also like to point out that a few years ago, no one thought ZSS could really hard-counter any character, but I'd say that is no longer the case. Donkey Kong and debatably King Dedede are at least +2, among other characters. She also has a convincing advantage vs. Ice Climbers, who are a powerful character in the meta right now.
Salem, NickRiddle, Quiksilver in europe, and several other ZSS players are taking home top 10 placings at Tournaments That Matter consistently, and players like Salem have shown that ZSS is fast and flexible and can be very strong.
I used to think that characters like Wario and Marth were a level above ZSS but I don't really think so anymore, she should be in the same tier they are.