As the person who has originally made the new versions of the maps, I'd like to express my opinion which I hope won't be lacking in nuance in spite of that being the case.
The reaction to Irving over the past weeks has been overwhelmingly positive in both what I have observed in the Discord live chat and in person, the player numbers have been stable or in the case of Ia Drang even drastically improving from anecdotally observing the server statistics on
https://www.gs4u.net/en/s/374393.html
The reactions to modded Ia Drang have been mixed, seemingly evenly split between those who like the new version and those who don't, then again it is hard to tell whether Ia Drang may not be just relatively unpopular in general and no amount of modding would change some people's opinions about it. The question is which of the two, the original or the new version, this particular group of people would consider the lesser evil so to speak? I think that even if we end up voting for the modded maps it would be better to move Ia Drang further back in the rotation again, just ahead of the other lesser popular maps but after the last unequivocally popular map.
Saigon was always going to be controversial, we could try adding a ZSU as long as the poll is open and see whether people who have previously been skeptical about it will grow to like it or not, if not we can still remove the Saigon mods regardless of the results somewhere down the line. Our goal was initially only to mod the unpopular and unbalanced maps such as Irving, Ia Drang and possibly Fall of Saigon.
Ho Chi Minh Trail was mostly an experimental map in which I tested many things that I later added to the other map, I've changed it to such an extent that it is now playable but flawed and I've seen criticism by Toxic who as we all know is very much an infantry player who has expressed discontent about having helicopters on what has been an infantry map before. I do believe it is valid to be raising these points and as with Saigon, we can still revert some maps to their originals in case of the modded maps winning the vote.
I will cast my vote for the modded maps with keeping all this in mind.