if u are forced to play with less m10s and more shermans, most players gonna shift to axis i guess. Shermans are very weak against tiger panther and jagdpanther.
I've seen a lot of posts that talk about Tank Destroyers/Heavy tanks. I chose this post for no real reason except for the comment about producing more shermans than m10s. You have to remember that shermans aren't tank destroyers. Shermans CAN fight tanks... but shouldn't. Medium armor isn't for fighting other tanks. It's supposed to be used for medium armor stuff and some light vehicle/occasional medium tank engagement. The sherman is the best example to use. Shermans are fine because they're cheap, fully upgradable, and capable of engaging various types of armor. The effectiveness is debatable, but most people will agree not to engage heavier armor with shermans... or even engage medium armor with shermans (but if you have to, they won't completely suck). Shermans are those guys that blow away inf and support weapons, and should be supported with at... we all know this.
My only concern is the panzer IV because it isn't good enough in that "occasional medium tank engagement" part that I mentioned earlier. Sure players shouldn't buy medium tanks just to kill other tanks, but it should at least.... not suck, right? Most of us remember the days where p4s ruled the skies, but maybe some simple change (like a cost reduction), would at least buff some confidence in purchasing them (instead of damage buffs). I don't think that the p4 is a completely terrible tank, but it does tend to fall into the suck department vs medium tanks (like I said before, they shouldn't COMPLETELY suck vs medium armor). If it were a little bit cheaper on fuel, I would probably shut up about it. Most players like myself only really buy them for starts, and then just rely on panthers. I would love to have it cheap enough so that it would become a decent choice for a serious armor build. They're pretty easy to kill to if you make a mistake, so allies probably wouldn't complain either.