I'm personally not a fan of introducing hard caps for units. It is a bit immersion breaking. I'm liking the idea of slowing down resource income as a primary method of balancing large team games. It appears the benefits would be a slower game, less spamming, blobbing (more tactical play), less armor, etc etc. I'm just unsure if it is possible though. Perhaps this is something I can find out.
Is it possible to have 3v3 and 4v4 run with a standard mod developed by Relic to help address balance issues without throwing 1v1 and 2v2 completely out of whack?
3v3 and 4v4 scale very differently. The idea of a mod is interesting, but I honestly don't know what the impact would be.