Thanks for posting our work again, it's a trip to see it on here
Some answers:
I haven't made changes to the UI because I'm still focusing on the characters, that's what I really love to do. Aside from the characters, most of the stuff on screen is mugen default.
The gravity is different on mine because I'm not trying to copy MK's code precisely. Interloko is doing that with his build, also coding the UI and Stages. I code more by feel, making adjustments to have certain combos work, and to fix different situations like the player going off screen. My version has the characters scaled up to match standard mugen characters.
Like I've done with previous characters in mugen, I'll end up giving all these different moves. I like the realistic fighting styles better. It's something that used to bother me about MK, I remember playing Tekken Tag, next to MK4 and wishing MK's fighting styles were more realistic and unique. So I don't try to copy MK's play style completely. I'll create the general feel, but I have my own ideas to play around with.
We are using mugen, because it's the limit to our programming ability. I'm learning C++ now, so maybe I'll be able to work on a better engine. For now, mugen is what I know best.
It is a lot of work, but it doesn't register as such, we love MK and it's a joy to work on this.
