For the type of game you were trying to copy, you did a good job getting the basics done in the game jam time. The current form is kind of a weird mix between Mega Man Battle Network and One Step From Eden as the pacing is more fast paced like Eden instead of the slower pace of Battle Network, but you have a more restricted 3x3 instead of the 5x5. I think the delay before you can move again is a bit too long, which makes things feel sluggish when this benefits more from a snappier movement. This does suffer from the same issue as Eden had where you have too many abilities and options to keep track of that the strategy just becomes build a deck and spam things on cooldown, which is what I did in this to roll through to the end. Since you said you're planning on working on this more, I'm curious to see where you go with this.
Another valid criticism and points to note + Yay! You know BN and OSFE!
By looking at this, yeah! The delay is kinda long between the abilities, but that wasn't on plans since originally you would recharge after using your abilities. But in this version, there's no delay between using your Abilities to a Weapon so you can combo with for example: A Wind Racket into a Pistol Saber! Also, OSFE was 4x4 iirc. This project is still pretty scuffed but these points you noticed always gets a smile in my face! I'll aim for continuing and tuning the project since (just like my prev jam game) I liked doing this but there's always an unfortunate situation that messes my scheduling and it derseves a purposed version!
And... yea, I kinda have the same issue with OSFE when I have a deck with too many abilities.