Agreed.
Also, there is no need for so many multiple positions like some might think, and like some have done. If you can have them, that is you can farm a lot of green packs, then why not? Multiple positions provide the user with more possibilities and also for convenience. But, they are not necessary as such.
DC-DMC: ok
DMC-MC: ok, and might be even better than DC-DMC in some cases, but this combination is rare in this game. Most, if not all of those are due to training for the additional position.
AML-ML / AMR-MR: ok
AMC-ST: ok
AML-ST / AMR-ST: ok
MC-AMC-ST: not ok. Why? You can find this out yourself if you do some work.
DL-DML / DR-DMR: ok
AML-AMC-AMR: ok
AML-ML-DML / AMR-MR-DMR: acceptable
DMC-MC-AMC: may be acceptable, but it goes against the logic of football