Reasoning behind 20/20 theme team chemistry?

I'm very curious as to why the decision was made to drop theme team chemistry to a maximum of 20/20, allowing for only a +1 in 4 different stat categories.

This effectively makes single team theme teams unplayable in MUT H2H, even more than they already were when compared to the "god squads" you'll often face. 

This decision alone is making it incredibly difficult to justify paying for the full version after the 10hr trial expires.