Your offer sounds intriguing. Is it still actual?
If so, you may be interested to look at my free deck-builder game:
https://alsoknown.itch.io/way-to-crown
I tend to think that I have quite a lot of creative ideas myself, but I always enjoy discussing (and perhaps implementing) other people suggestions. So whatever your mind produces: new mechanics, cards, monsters, or anything else -- I would like to hear.
You can answer here or on our discord.