some suggestions for smaller additions in the future:

a diary, notepad, editable section in the menu
For example near the "recipes" tab, the journal, or as an usable book you can carry with you in your inventory. See, i don't have a big problem to play with a pile of scrap-paper in front of my keyboard, but i am someone who writes down stuff while playing, for example:
- recipes and combinaitons i discovered
- what i want to improve next level up on what character
- sometimes even which character in my party is able to do what (so who was my crafter/lockpicker/pet-pal again? ^^)
- puzzle stuff, so that i don't have to read the whole book/riddle/bleigh again
- lists of stuff i need (for crafting for example), things i want to do during the next play session and so on....

also i would like to see

Minigames
such as a drinking contest, gambling, or even fishing. Or something to "challenge" NPCs in the world (i really like the simple "minigame" to argue with people already). Would be nice if you could challenge a trader to gamble for an item, for example, or convince a citizen to a drinking contest, and if you win, you get a small reward (he may tell you something special, or give you a random cheap item such as a fish or an apple).