All popcap should scale according to a unit's real usefulness. Otherwise, you create no-brainer build-everytime units. If a low-popcap unit has no unit limit, then you've created a spam-monster (see live-version Comet).
You talk about baby steps yet nerf specific certain units to the ground, now the comet is joining the vanilla churchill...
Post nerfs the comet just feels like an overpriced easy 8 with 20 pop
Main gun nerf and WP change would have been enough, so why nerf comet pop to 20 while leaving all Axis pop the same (like you admit Panther is 16! or Easy 8 14! pop)
I don't understand why you decide to mess with population at all when all axis tanks stay as is, are you saying easy 8 spam or panther spam is not a thing? Because after 300 or so 2vs2's I can tell you it very much is.
The "out of scope" excuse seems rather silly on that regard, just saying