Even if they create the best L2G server,people will quit for a lot of reasons.
People just bored of that style and even if they start playing into a new server,they will quit after S grades/epic jwls.Thats what happens to every single server
(Duration from 2 weeks until 1,5 month).
The only reason why original gold and oldschool survived,it was the gears.U could play pvp smoothly with decent gear (dyna+6 hali 16) and most of the people had items in OS (transfered gears from gold to OS with 1-1).
In a few conversations i have had time to time about these servers,i ended up thinking that openning a pack of gold with an old database(wiped accounts lvl 1 full items-all higher than 16 ->become 16) would have more success than any of these.
TL;DR its not about the server files.Its about the style.If u cant go full pvp,with end-items,the server will die.