I'm not sure about what SytheScape has since I haven't played the beta, so if I've suggested something that exists, or is currently being implemented, then I'm sorry about that.
Some short term suggestions that would help the server strive:
-PoS (Player Owned Shops)
-Working Construction skill
-Leaderboards for PvP/PvM/Duel Arena (both on the forums, and in-game like it is in the duel arena on OSRS). The PvP leaderboards would include Kill-Death Ratio (KDR), and number of kills/deaths. The PvM leaderboards would show your killcounts/fastest times on every boss, and the global killcounts/fastest times on every boss.
-Daily Events: DH tournaments, Bridding tournaments, Clan Wars, Fight Pits, Drop Parties, Trivia, Vote Competitions, etc (these could include IRL $ prize incentives that could be funded by Sythe, or from a % of donations made towards the server). If help is needed for them, then I wouldn't mind helping out with them if need be as I've worked with several staff teams over the years, and have managed events several times in the past.
Some long term suggestions that would help the server strive:
-Full/Partial Raids
-Inferno Pits (for the new Inferno cape)
-Last Man Standing
-Regular DMM worlds / DMM tournament worlds (these could include IRL $ prize incentives that could be funded by Sythe, or from a % of donations made towards the server)