There should be gun parts in barrels that are very rare to find, like 1/100 barrels have 1 part, and find blueprints for making gunpowder, bullets and a crafting station, like you can do in ARK, and cannons for fighting pirates and maybe multiplayer combats. (if you do this, make PvP and EvP servers and LAN possible) Also, nig youtube channels like ZerkaaPlays and Slogoman play this game, look at their vids for feedback, and as a Promotion source.