TF2 Server

Prop Hunt isnt the best. It isnt well known. It also isnt the best idea for a new server.
A good idea to get this server going would be to get multiple servers with diffrent types of gameplay. Such as, Relaxed (more of a friendly gameplay for people who dont want to stress over a good player) Competetive (you kinda already have this done with the dm_duel maps) and Trading (trading o3o)

The relaxed gameplay should be more fun servers like a large dm map or cyberpunk.
Mario_kart is also an option... I do know that there is lots of large dm_mario_kart maps.

I think this is the best way to get a server started. Its how most servers start out aswell (exept most servers did not have trading, but had something like ctf or payload or cp)

Another good idea is to not put the same map on all the time. Switch it up a little. That gets servers popular fast but it can also depopulate a server fast too.
So those are my ideas... o3o