I disagree.
I've had some very small criticisms of Gomes these last 4 seasons and the crux of it was that Gomes sometimes is too passive. When he plays deeper, that burden is no longer there and thus that criticism is gone. A consistent excellent part of his game has always been his ability to pick up the ball from deep and advance the play as sometimes our team has a problem playing it out from the back. I'll note that O'Connor was probably the only one who did that apart from Gomes in that group of players.
When you look at Gomes skill set he's perfect for that Verratti, Modric, Xavi midfield role. He has an excellent first touch. His technical ability and low center of gravity with the ball makes opposing defenders ease up on their pressing because he can all of a sudden make a convincing feint, pass it on, or carry the ball with his close control. He's also great at 1 touch passing.
Out of all of our midfielders Gomes has the best chance at becoming that type of midfielder. Levitt, who I think actually has a better weight of passing than Gomes, is not as nimble as Gomes. He's a bit like Gribbin and Januzaj (though not a #10) in that he has great technique, and elegance, but is a slight hair slower than Gomes in getting rid of the ball, or feinting defenders, etc... I don't know how else I can describe that trait. I don't believe that kind of midfielder is often like Levitt, who I believe could be a good #8.
I'm not quite sure why you think his exceptional qualities aren't suited for the position. A midfielder like that also participates in attack, they're just more of a constant force in distributing the ball, and being the best at retaining possession. My only criticism of Gomes for that position is that he's not as consistent in his defensive duty, but usually that happens when he doesn't play deeper. In the u19s, when he was deployed deeper, he actually did really well with defending and what's more important is that those kind of midfielders aren't some defensive monster. De Jong, Verratti, Xavi, Scholes (older), and Modric contribute defensively, but compare that to actual defensive midfielders and it's night an day.
BTW, that quote I had in my earlier post came from Nicky Butt. He also believes Gomes could be that type of midfielder.