Explain it to me again, this time provide some specific examples of the plethora of builds that have potential that haven't been tried yet?
On a general note you should read this article from a pro gamer - one section being about previously 'undiscovered' strategies or tactics that emerge from games where maverick players find a specific way of using a unit or ability that others haven't considered (think jeep pushes in coh1) http://www.sirlin.net/ptw/
A couple of thoughts in Coh2 - I played a 2v2 recently where we drove the Germans back to their base taking both fuels - I was so confident I built a howitzer mid map to finish them off along side my katushka but out of the blue the they came back strong with heavy scripts and 4 T34's and crushed us despite my vetted units and varied army
I asked them how it was done and they explained they were using the rapid conscription ability in the commanders - something I have ignored as a gimmick ability. This allowed them to negate the attrition I have inflicted upon them.
Another area I neglect is many of the vet 1 abilities - have you used snipers incendiary shot perhaps with a sniper spam build and muni points? What about trip wires or booby traps?
Just because you cant imagine the strategies doesn't mean they aren't there