This is one of the reasons I actually stopped reading the X-men.
It seemed as if they deliberately sidelined their minority characters for a while. Even Storm didn't play a prominent role for a while back then (which was particularly annoying considering she led the team for a good, long while way back when).
Apart from Bishop, they are no prominent male X-men of color. Gentle is more a prop than a character. I'm happy that Duggan at the very least remembered that Synch existed and has used him a lot.