Support, I didn't play Infection when these maps were still here but from what I heard they are good maps.
No support. Maps are removed for a reason. If a majority is in favor of removing the map then it'll most likely be removed. All these map names offer a great opportunity for a revisit to the design.
Stronghold would be nice to have again (OG pet hiding ) Halloween used to be way too overpowered for humans, but I'd actually like to see how it does now.
I support. I rather enjoyed playing on the old maps. Also, I agree with @Ares_Xena, perhaps some of the less popular maps could be redesigned so that they are more fun to play on while retaining the same themes and similar layouts.