If you hold down your mouse button (in 'arrow' not 'finger' mode) you will have options to move an item to the top or the bottom of the list, no need to drop items.
Thank you, i find it right afte post, but it moves items only up or down at inventory, my suggestion is to move items by the player wish or need at different place

edit:
Actually i like Lineage 2 C4 inventory, clear and simple, not so clear like FO2 inventory and FOnline, but it going to be nice if someone can make 2nd type inventory with more place for items and so on, same for holding items in lockers - no need to list items if you have 10x10 grid.