Great, then allow me.

There are two paths that can be taken, but neither seems pretty.

A- Fork Cgminer, alter some or most of the code, change the UI, and you get your custom firmware like 99% of the firmware distributions out there.
B- Start from scratch like Braiins, that's a huge project that you can't do on your own, and will take many years to finish.

for A, you can't really make any money off of it unless you do it illegally, because Cgmier is protected by open-source GPL3, for B, you are going to need a lot of funding.

However, what is the end goal here? if you want to give to the community, nobody gives a fuck, people are either happy with the stock firmware, or use custom firmware and pay a small % of their rewards.

There isn't much that can be added to the mining industry, it's too saturated and all the improvement is now in the hands of those who design and manufacture the chips, if I were you I would look into developing something that I could monetize in the future, either by directly selling it or by using the skills I learn along the way to get a decent job, I don't know what that is, maybe AI related, anything that has a great potential which mining does not.