Honestly, I think if the server was brought back with factions focusing on realism when it comes to organisation of patrols, the command structure, ideology and attitude on the war, then there's potential for a good gamemode there. But in order to do that, you have to set the grounds for the playerbase to interact with the server, setting, other players and lore in a non-memey way, which has been engraved into the game mode after what seems like years of pissing about.
More events would be a good way of keeping the server fresh, and less S2K events based around capturing territory at that. More events involving the horrors of war, such as civilians getting caught in crossfire, the use of prohibited weapons, stalemates and insurgency would be a good way of promoting RP on the field at least.
In the FOB however, NCOs, especially JNCOs, need to be taken more seriously, and accordingly, need to act more seriously. There's been more than one occasion where I've found JNCOs acting like glorified minges at that, and there's been many an occasion where I've seen SNCOs join in. Though the consequences for demoting or ICly punishing such acts usually just end up with people's friends jumping down your throat, and as a consequence the memes continue. Regular enlisted need to be given a way to roleplay and develop their characters outside of /me bang bang kill enemy. Sadly, I don't think I can recall many times that they've been given such a chance, at most I've seen people doing training courses for a physical exercise or weapon stripping. Though some of the best memories I have on the server are when detachments offered training sessions for equipment, for example when I was in the Coalition Medical Detachment, I remember holding many first aid sessions with
@KillerKat and
@Pict and that provided a good way for enlisted to interact and develop, whilst also learning something useful.