Longevity

[Luna]

"An older version of the gamemode was already tried and didn't last for more than a day before dying, doing it again would be a short nostalgic trip that doesn't really help us."

You keep reiterating this point however I think literally none agrees with you - not even your own staff.
Everyone wants an old version of the game mode open and you just refuse to let it happen - because admitting defeat in this instance will hurt your pride.

well then the next question is how old of a gamemode do people want because you could be talking from getting the 2010 gmod 9 gamemode from soulrippers off shore vault hidden in the depths of the bermuda triangle or the2019 gamemode.

(assuming that a gamemode pre 2017 or something would be selected)

all that would happen on a server with an older gamemode would be maybe a few days of activity from everyone going like wow remember when you pressed f2 on the doors and it was a small box with green text!!! or that the f1 menu was a silly little grey box with a bunch of tabs at the top. toppled with this some really old obsuce exploits that were forgotten about could be readded (and on v2d for the added nostalgia effect). 

there's a reason why there are no remaining gmod servers that run a really old gamemode are still around (with maybe possibly potentially perpheads but that isnt really compareable to this because our old gamemode was nowhere near as fully featured) or even active anymore. 

the only way it would work is if all the older players came back with the same mentalites they had back then to play on the server and put in as much effort because there is no way a sustainable playerbase will happen with the old gamemodes because there is literally nothing to do if there is no player interaction apart from spawning contraband and weed. 

your whole point just comes across as "oh it worked back then so surely it must work now!!"

Spoiler :