I really enjoyed it; it was good old fashioned superheroey sciencey stuff, and the 5th issue managed to bring all the plots together nicely in my opinion.
As to the characters, it only really focuses on the 4 of them. Cyclops and co do pop in occasionally but definitely aren't the stars.
I can definitely see why you wouldn't pick it up though, I can see that it wouldn't be everyone's cup of tea.