Not sure Peacock needs buffs...?
Don't want to sound like I'm saying this solely because I main Peacock but I feel she could use some buffs potentially. I mean her damage is really good, in some situations she has great 50/50 resets and she is a meter battery and while I like to think I do very well as her, have done well in tournaments and really enjoy playing her, I have to say I think she has a lot against her compared to the rest of the cast.
Her damage is terrific but landing hits is the hardest thing for me as a Peacock main. Against good players I can almost never open them up and against most players I have to rely on my assist for a lot for confirms. Granted this is helped by her damage output, but it doesn't do her good when her chip damage and argus confirms aren't enough to finish the job and she can't get any solid hits. (Might I add that while her chip damage is decent, it isn't outstanding by any means. In fact I feel Robo can outchip Peacock now, and while characters like Fukua and Parasoul can't do the chip Peacock can, they have a stronger set of normals and tools to back up their zoning where Peacock relies mainly on her keepaway)
I get she is supposed to have poor anti airs, but this just makes getting hits all the harder. Her air to air game is weak too. If I recall, she has the slowest air light (at 9 frames) and while her airgrab has been buffed over the years, it is one of the harder air throws to confirm off consistently (Though perhaps that's my fault as I try to go for j.mk mainly). Also if I get an anti air, the rewards tend to be rather miniscule. Anti air c.lk leads into s.mk most of the time but c.mp is kind of wonky to confirm off of and ends up being just a single hit, but leaves the opponent in my face where they want to be anyways.
Same goes for her defense as it's reasonable to be lackluster but it's not doing her any favors. Most characters have ways to get in and since the chip can't kill good players on it's own, they are going to get in eventually. She lost her last fully invincible move (Lenny) and has some of the worst defensive options along with Robo, especially when cornered. There's a reason why I'm so prone to abusing tags, it's her best DP at times. Combine this with how against certain characters she can't even dare to input a special or even throw out a single bomb without getting opened up (Beo, Filia, Val, Fortune, Fukua and to an extent the likes of Double, Bella and even Band is intimidating at times) makes her have a hard time doing what she is meant to do. Many times I've played Sage and Sonic and I can be doing a great job at keeping away but unless I get off a difficult confirm, I usually don't get the kill and Peacock will eventually die.
Let's not forget her level 3 is just a troll/hype move in it's current state, her airdash leaves her ridiculously vulnerable if she tries to escape a corner with it without shadow charged and both her main reversals are beaten/baited simply by jumping.
Long story short, she can do well, she is a good character and has strengths and weaknesses like all the others. But consider that she has all this: slowest air jab; a useless level 3; some of the worst defensive options, anti airs and combo starting potential; relies mainly on her zoning which is only decently damaging and ineffective against most of the cast and trumped entirely by certain assists, only character with no fully invincible moves, and has the slowest "fastest low" at 15 frames.
She might be good and I think she's fun to play but I think she could use a bit of help. Peacock just has a lot against her that makes her a lot less intimidating at a high level. Not trying to come off whiny or needy, just figured I'd say what I think.