How is it cheating? We keep talking about our midfield. Well let's use all our midfield is we're going to make it fair. The midfield is more than our CM let's compare fairly.
Also our CM options if fit is fine. That's the nightmare Fergie faces, we've got enough quality there IMO, but not the reliability.
It's far away from fine. Our central midfield is for a mid-table club, not a midfield of champion. The only very good player in our midfield is Michael carrick,and even him wasn't that good for about 18 months (from 2009-2011). It's not sure that he will play next season as good as this, or he won't be injured. And even if he plays that good and won't be injured, what do you think, could he played in Barcelona, Madrid, Juventus, Bayern?
About the others, you're talking if we don't have injuries. The problem is that we can have injuries, we always have. Both Ando and Cleverley, as much as I like, chances are very high that they will have injuries again.
Scholes was a great player, IMO the third best central midfielder I have ever seen and the best English player I have ever seen. But the problem is his age. Do not forget that Scholes didn't start UCL final in 2009 and 2011. If he wasn't that good to start in our most important match of the season 3 years ago, I doubt that he can do it now. Last year he was fantastic, but on the other side he had a rest for 6 months, and even that he showed signs of tired in last matches. I doubt that this year he will be that good again.
Giggs was never a central midfielder, he is a winger who can play in midfield. He is not the player who can dictate games, he can make some beatiful assists but not dictate the game. And again like Scholes, he didn't start in final in 2008 (4 years ago). Relying in Giggs and Scholes now, just shows how bad our situation is comparing with 2008 when we had a still not that old Scholes and Carrick, Fletcher, Hargreaves who were very good, plus emergency players in a not that old Giggs and a talented Anderson.
About Fletcher, he will never be the player he was. Much of his game was depended in his energy and chances are absolutelly slim that he will have that energy again. In fact we don't even know if he will even return.
So saying that we don't need midfielders doesn't fix our situation. Adding in the list wingers, Kagawa and a young unproven Powell doesn't fix our midfield situation too. Buying one or two midfielders can fix it.