A few things...

[Gojira]

So, i'll just suggest a few ideas that I had in mind (some I already suggested a few times but I never get a proper answer so might as well post again).

1) Muspel

The drops were nerfed and the selkie portion was changed to make this a pain to do with a low amount of players. The problem is that there isn't and hasn't been anyone around to bring huge parties to muspel in quite a long time. Even after the change, most of the kills were done by a party of 2 in the official one (not the mini-event bagged muspels). I'd suggest keeping the nerfed drops (much lower return of enricheds then it used to be) but returning to the old selkie map since the current one is just not realistic for the active playerbase that this server currently has.

2) BG

I'll start by discussing the games available via BG. I already mentioned this before but something known as BG 2.0 has quite a few games available that are, for the most part, much more enjoyable then the official ones (conquest, rush, capture the flag, triple inferno, team deathmatch...). Having those might motivate players to participate compared to how it currently is...

Another thing that would stimulate the BG activity would be proper rewards. Currently, the prices for the gears are simply ridiculous. The gears that are supposed to be "entry gears" are about the same price as glorious when, in fact, they should be much cheaper so that players can rapidly gear to participate in BG/WoE. There should also be the possibility to obtain WoE/BG materials via the points obtained. BG on this server has always been treated like a zeny sink. This is NOT what BG is meant to be and treating it that way as resulted in shit like people afking, refusing to pot or dicing rather then play the actual game since they want to spare their ressources. BG should also be spammable without keys, as soon as there's enough players to start a game it should be possible to play it.

You need to use BG to stimulate pvp-oriented activity on any server, especially since WoE is one of the main end-game contents. It's already a big negative that we don't have WoE:SE, it would be a good thing if at least our WoE:FE was accessible to new players and not just a war of people who had access to tricks, which gave them nearly unlimited ressources, that have been nerfed.

3) Guild Pack

This is just an idea i'm throwing out there but you might want to consider guild packs to make new groups of players join. Of course, you'll have to ip check people to make sure the pack isn't farmed but this kind of thing can be very beneficial to make groups join a server, especially on a server as old as this where a large amount of the players left have been playing for years and are very well geared. A guild pack doesn't have to be the best items in the world but at the same time, it gives a starting point to a group rather than making them start from scratch. You can put different scales of guild packs, depending on the amount of players who will be joining the said guild.

4) Quality of life items

Customs can be a great thing but I feel like some official items would be good to consider. One that immediately comes to mind would be gym passes or kafra cards. They're a huge quality of life improvement without being something that breaks the game. You could also put the good old repeatable exp quests in (I don't even get why they were removed in the first place)

Anyway, RO is a very old game at this point. Even low rates now must offer quality of life stuff like consumables via BG because most of the remaining players are all adults who have stuff to do other than RO. This server needs to adapt a bit or there's barely any new players who will appear :<