Firstly... WOW! Congratz guys! I’m glad someone decided to make a decent SSB kind of game, and best all, in a indie way! And it’s gonna be awesome from what I can see and have played!
Here are my humble suggestions for improving it based on experience (I made Multihero, the only 'decent' SSB inspired game on PC I presume? Indie brawl will be the best I’m sure when it’s done)
The first thing I noticed when playing the game was the lack of a ‘hit-stop-continue’ effect when an attack connected. Let me explain that better for those who don’t get it. Y’know in games like Final fight, street fighter, super smash bros, samurai shadow, killer instinct and many other games when your player lands a punch on the opponent and the punch animation holds still for a brief moment and then continues… that’s what I’m talking about!
That effect makes a HUGE difference on gameplay, I don’t know why, but it feels more like you landed the blow when that happens and you can distinguish it better as well during gameplay, it just feels right! Originally, before I released Multihero, it had none of that and it just felt a lot better when I added it, all my friends agreed, and it doesn’t take a genius to realize the best games use that from the old days to nowadays.
So there! Hope you consider it, I really want to see this game shine and it’s got everything going for it! I wish I could contribute more to this project but unfortunately life as it is for me right now and the project I got in my hands doesn’t leave me much free time. But anything I can do to help just ask! I certainly will if I can!
Oh! I made that up, ‘hit-stop-continue’ hehehe, someone please tell the name for that effect/technique if one exists!

Cheers!