Do units created in orbit but not dropped yet count against your population for upkeep purposes?
Good question, don't know and keen to find out.
I think tacs are 10 pop and scouts five so I have just figured out my two tac (one in drop pod), three servitor opening into double scouts puts me over 30 pop quite quickly (33). Would explain why my rush build, using deathwatch, to win the first fight suddenly comes to a halt and I have to wait a long time for ASM (also 10 pop)
Pop figures from here and may not be correcthttps://www.pcgamesn.com/dawn-of-war-3/dawn-of-war-3-units-factions
Also Not 100% sure on the pop threshold
For upkeep but I think managing this may be a much bigger issue for marines than other races