I think Graft has potential. Also, I like the fact that they build everything from scratch, with monero developers, GRAFT also have top notch privacy, if they can process tps like visa/mastercard, lots of potential!
On the othwr hand, they are stacking things against them a bit. There's already a lot of people mining, and they have a lot of work ahead of them to make things a reality. People believe in something when they see confidence (a lot of times in the form of marketing) what appears to be progress, regardless of how good the product actually is. If something doesn't go right, or a deadline is missed, they get scared and dump.
I'm not saying I don't have confidence, but I do fear a lot of people won't because they don't fully understand.