I'm think they must not be removed.
The strongers team, will always win all competitions, so, why play if we can do nothing??? In this way, a medium team can choose one competition, and focus at it, playing mots when is necessary.
If strongers teams, want to win all competitions, they must to be too much high than the rest. Real Madrid, Barcelona, ... play all competitions, and this have a penality for they, in the game too. If we can't do nothing different, the strongest team, will always win the cup (for example) being more strongest!!!!
I think mots give to the game more exciting experience, and more tactics... but when you're the strongest team, you don't like them, it's normal, and when you are the weakest team, you agree with them. But in global terms, I think they are necessary.
That's my opinion.