Seeing as you are going for an MMORPG stylish game where you play as an NPC it would be cool if you could hire and send out quest to "Players" to get stuff for you, like ores or materials and in return you have to give them a reward like a free weapon, and its timed so you have to make it before they get back from the quest.
During sandbox mode I noticed you wanted to add mining, while it may contradict with my first suggestion it think its a great idea to add. You should make it so you can change tools to a pickaxe for mining with a hammer sounds rather silly.
Another thing which you may do later on, is to add more variations for daggers, great blades, hammers and just over all stuff.
And lastly, which once again you may do, It gets boring waiting for more "Players" you should REALLY up the frequency that they spawn as the days increase.
I've been waiting AGES for a game like this and I am SO happy a game like it came out. I will do anything I can to support this game.