Needing to collect items to craft things and VERY limited inventory space sucks. Hard. More so when you need to buy slots with cold hard cash after the first increase. Add the need to grind to level, the low drop rates (including below level gear), and the low gold flow and you ruin the fun that this game should be.
Fun, but your own AI gets distracted far too easy. I said kill the group, not start re-filling the one area they are trying to turn red!! (for the 300th time) Makes controlling more than one group a pain.