Depends what type of control were talking about, i mean... for example, a long and commited round between Woodland and Eithne, Eithne wins if she lines up the high creatures and scorches while pinging out the Thrive units before they even grow... the problem is that Eithne is not as prevalent anymore since she got nerfed which is what kept pure point-slamming in check. (Which totally needed to happen, but thats the issue, we need a middle ground where neither control nor Woodland gets out of hand).This is exactly due to excess control in the game. These huge point slam units are more than removal can do, so they stick to the board and beat removal. Only if engines would stick to the board and people would thus use them, the engines would beat these point spam decks.
I'd consider healthiest a meta where engines and removal by engines is the dominant tactic, which is only achieved by increasing deploy removal units' provision cost.
EDIT: It is not to say that speartips are broken too. Adding a doomed tag should do the trick for those, as the problem is more the huge bodies than the graveyard consuming units' provision cost, because on most other cases it is quite well balanced.
And engines? Yes i totally agree theyre far too weak and always get cleaned out... ive heard people talk about implementing armor like before instead of pure hitpoints, which sounds good.
Ultimately, i think what is needed is a balance between: Control, Engines and Point-slam... when all three of these strategies are viable without being overbearing maybe its when the game is healthy (just for reference ill mention 3 dark eras: the pointslam era of SK veterans (or dorfs), the SK uncontrollable engines of greatswords and the era of artifact Eithne... i think these are moments nobody wants to go back to)