I'd say a server that is like classicus would be really good. The thing you need to make a server last is the oldschool feeling. So i'd recommend a 7.4 server with low exp rate but not too low ofcourse, lootrate should be around 3-4x or something so you dont have to make lootbags of everything. Reason for having a 7.4 instead of 7.72 is because you want people standing outside their house training and making runes, which makes the server having a community and if your bored of exping you can just chill outside your house. Perhaps inventing warmode with pvp-enforced might be a good idea to get people too actually use the warmode system.. Maybe a new island that people can explore with new modified monsters