1. I think you are incredibly ignorant to the current state of bfme and the importance of army, and army positioning. Though there could possibly be a bit more macro (tending bases and all taht) the current map has a good balance of macro,micro,positioning and decision making, heroes play an important roles yes. But it would be boring without them. Not to talk about that you didn't have any idea that it actually was a ''rock paper scissor'' system of a kind already in bfme.
2. I think you should become better at the game before trying to actually balance a map, not being good or asking good players about balance and gameplay will make you ignorant to things that are rigged or can be exploited. Your versions of whatever map you make will most likely probably be incredbly imbalanced and will take a ton of versions to get near a balanced map, and when people get better you will have to rebalance the map totally again. ( as we have done with bfme)
3. The map you are describing would require a totally different map from the one bfme curreently has cause its not enough terrain to use. The map you want to make; No map that i have played that tried to be like you are describing about positioning and all that have been successful, every decent strategy map like bfme, rw,lord tactics, etc have had heroes be a central and important part of it. I see the most likely outcome if you actually got an old or current version of bfme is taht you started mapping it, realized that whatever map you want to make will take far too long time and too much balance work and terrain editing, that you simply will make a nub friendly version of the current bfme with high hp bases, slower ms, less stuns, nearly no collission on heroes(so they cant get surrounded) siege dm removed etc. Basically make it more nub friendly.
4. You don't have any idea how much work it would be to actually map, and all the bugs and errors that randomly generate, not to talk about all the triggers you would have to edit to fit into your new fantastic map.
5.There are so many flaws in the posts you currently have about how to balance it that it would take probably more than half an hour to pick all of them out and present the flaw of it, here's a short one though; KonradT said: But then 3 teams will be better in order to allow autobalancing if one team is too strong.
So you want to punish a good team/players by making the two other teams win. You want one of the weaker teams to win the match instead of the team that has been dominating all game and outplaying the others. Cause thats what i would do if it was 3 teams, and i were on one of the weak ones, I would team up with the other weak team to take down the strong one. Since this is what you're suggesting is autobalance, which is fucking ridicolous since if a game is balanced the strongest team should win 90% of the time unless some strange or bad decision happens (which is what the other 10% is for)
Alright that's it im done for now. If you have any more ideas or objections I will be happy to respond to you another time.
-Love, Rizel