This. Fights necessarily involve attrition.
There's a place for formations, especially at the start of fights. But fights shouldn't be determined by on player clicking their fighting units into formation and the other player being slow to hit H before their units try to chase enemy that ran to the back of a formation.
As a related note, I don't think units going into formation should be able to run. There should be a cost associated with having a disorganized army and calling them into formation. Right now, going into formation is mostly a gimmick to get kills similar to how dancing heroes used to occur.
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I think the voting options are overly limited. I would want melee in front and range in back, regardless of whether those units are cav, inf, champ, and/or CS.