And that means characters that share similar powers can't or don't work on the same teams?
3 telepaths (Monet, Rachel, Psylocke), 3 telekinetics (Monet, Rachel, Psylocke), 2 characters with super-strength and durability (Vampire Jubilee, Monet), 4 characters that can fly (Storm, Monet, Rachel, Psylocke).
3 telepaths (Jean, Quire, Sage), 2 telekinetics (Quire, Jean), 2 characters with super-strength (Beast, Colossus).
4 characters with tracking powers and enhanced senses (Wolverine, X-23, Warpath, Wolfsbane), 2 characters with regenerative powers (Wolverine, X-23), 3 characters with adamantium weapons (Wolverine, X-23, Warpath), 2 characters with super strength (Wolfsbane, Warpath), 3 characters with 'claws' (Wolsfbane, Wolverine, X-23)
And there are more. There is nothing wrong with having characters with similar powers on the same team, it's how you use them that counts. I'd argue it's even more interesting because then the writer is somewhat forced to individualize them even further in terms of specializations and personality. Again, I don't view this as a con at all but in most ways a pro.
At the very worst, Duggan uses Rogue like he did in UA, as primarily the flying brick of the team. At best, he finds a way of using both Everetts ability to "synch" powers and Anna's ability to absorb abilities in different and creative ways. It's a win win scenario and I honestly don't think anyone should be concerned about overlap.