how about a trading system which involves, a sign above a chest, now the trade sign would get its items from the chest to sell it?? i forgot the plugin, but can u include this in survival too? to allyed factions can make some kind of place to trade the items with? because i think the money/currency is being under estimated in survival :\
and id like to make survival a lil bit interesting ^-^
If you want something interesting, it would be the creative world, as the survival world is fully vanilla, which means it's not modded with any plugins.