In my opinion there should be MC with extra roles in nordgens and not only in those trained by the managers.

If you have DC/DL Why not MC/ML or MC/DMC like the one i have in one of my teams he plays very good in both positions, but of course i had to waist 50SP in the DMC position. It is wonderfull to have this kind of player, you can adjustment your tactic without Making any sub.

In the same team i also have a AMC/AMR/MC very usefull If you whant to atack more or just play more defensive, with this 2 players in the team, i can charge formation very quickly.