Just bring back ladder paulting, the lance of compensation, the looney toones axe, and carryover WPF. Also let everyone get to level 40+ again. Make signing into Strategus fine you 50,000 crpg gold each time for a proper money sink.
Give server admins the power to call in swarms of AI horse archers or meteor like effects to kill people or grief the battle server with wacky events. Allow customization of clothes with colors, sleeves, accessories, and stuff.
Allow men to wear dresses again, and bring back crush through on half the weapons.