1) Java moderators could be usefull to help owners with java related problems or they can sell their services to private servers this could be nice as a support system to the others.
2) Same goes for the L2OFF Platform.
3) Every Clan leader must have their clan crest before their nicknames on this forum and a new Clan Recruit Topic will be usefull for the solo players to find new clans, Clan tavern Topic will be able only for Clan leaders and Clan members only they can post there, they can talk anything they want there, wars,sieges,comments about others clan members, and anything else.
4) Server owners should be able to add their private server here but as Unverified Private servers for the beggining and after 1 month of activity and uptime 100% Lineage2 Mods can check then change the server status to Verified Private Server by Maxtors approve
5) Middlemans are nice but there will be some real scammers to deal with better not to consider them for now.