Thank you for the feedback!
We would like to add small items shown in the box to indicate an item being put inside.
The scroll wheel does move the inventory slots, Z and X were added for anyone who wanted to use strictly keyboard and just sit back and relax B )
Items dropping on the floor serves 2 purposes. 1, Fun! drop a few items, kick them around, adds a little flare in our opinion. The other use is for strategically gathering items as to not fill your inventory. In the future, items will weigh you down and make you go slower so that would be a more effective strategy once implemented.