I can't seem to change base shields for Dream, Spirit, or Exile runewords (haven't tested other runewords).
I haven't tested any other rares, but when I added a rare dual-leech ring to my character and tried to create a game I always got a 'Failed to join game' error.
Please add a belt slot so I can directly add potions to it, unless it's already there and I just can't find it.
I don't know if this is a bug or the game just has a cap on some or all property values, but when I tried to add +1000 damage reduction (among others) to a magic small charm, the charm in the game had only +40 damage reduction. If the values for some/all properties do have a max, please indicate what the max values are on a tooltip (for example) if possible.