My idea for an easy to setup event using existing capabilities (no major programming needed):

Duration: 1 week

Location:  Skilling Island

New Characters only.  24x XP rate for all skills, no sub bonuses.  Cannot leave the island, no auctioneer, no trading.

Prizes for:

First to 99
First to flats
First to 1500/1600/1700/1800
Highest Total XP
Highest Skill Total
etc.

At the end of the event, character xp is converted to what they would have if exp was 2x, like we did with DMM.  You get to keep your bank.

Only some minor tweaks would need to be made.  Would need to add some Herblaw secondary spawns, would need to make ID guam available at lvl 1 so we don't need to do the herblaw quest, add anti-dragon shield spawn, make sure we have vendors for pickaxe, fishing equipment, hatchets, crafting moulds, etc.

I'd be willing to donate a scarf set and a 2016 4 egg set.