Well. it depends how easy/difficult it is to do that.
If it's too complicated for them to move teams around servers, then bots, as a simplier solution, would be their choice.
Btw, I like your idea.
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Yeah thats what I suggested a wile ago. From the feedback from high level managers on here I actually thought they tried it and it messed up the TM....hence my comment on it above. No idea if they did or not but logically I think population management is the way to go.