[x]Yes already counted

I keep a extra tap open all the time and check before I transfer things now so it would be a nice add to just click the char in game and know how many slots there where.
I dont think extra Transfer Boxes are needed though since it takes the same motion to drag and drop each item as is. Unless you select another char any item you drag to the Box already there will go to the last char selected. If there where a Multi Select feature added to this and Vault it would make transfering things faster I think though
