The game is already stale of 15v15 (granted they might finally add 2 new modes next update). I *like* the different team make-ups. Who the hell wants a duplicate team composition each and every time?
Now, the gripes I get in MM is when one side gets all the platoons (which is MINDBLOWINGLY overwhelming), when it tosses an excess of tier 8's to the enemy 7's (why can't the MM at least balance out tiers), and when there are more than 3 arty per side.
I prefer matches with arty as it minimizes where people can camp. Without arty, then people tend to camp all over the place. Also, arty allows the team that lost its idiot top tier tanks to compete against the top tiers.
...
Oh, and I had a fun series of losses over the weekend. I did 8k damage in my jag tiger and we lost. I got 9 kills in my MS1 and lost. I damaged 12 different tanks in my E100 and lost (6k damage). But then in a clan war, I played my 261, I ran out of ammo including the 2 AP shells for TD mode (made both count on an E100 and 110)... did 9k damage, got confederate... and drew.