What is the Base ROM??
As you requested: Tutorial is minimal but I think it's nice. But still you should be able to end it on every point (just an x or sth similar) and sometimes the "fingers" are pointing to wrong direction (caused by DPI?).
If needed I can make some ...
Try ↑ ↓ kick ← ← → punch ↓ ↓ ↑ kick kick
They said, they would like to focus to new android releases but keep updating old ones security flaws. I think there is very small number of omni developers now because there is few commits to their github. Omni doesn't have an "army" of developer...
It's really stable, easily can be used as a daily driver. If you don't put too much stress with too many application it won't give you any troubles.