2. Alt/Ctrl click to go from screen to screen (trade/sell/etc..)
3. Crafting - randomizing stats on higher level (even lower level maybe) items - rare opportunity to make a fine item
4. WASD movement
5. Key binding
6 (yeah, I know you said only 5). Downloadable client with access to some XML/API for possible modding (I want an expandable map, the ability to open up all my bags as one inventory screen and to assign certain bags to hold certain types of items) - Gimme that jar file
Enjoying the game more than I thought I would - kudos to all involved.