you can make some way to replace more then 1 pciture by time
Something like press SHIFT or CTRL to choose multiple itens
this will be VERY usefull to drag and drop items/gumps/landtiles/ from browsers to VERDATA EDITOR to!!!
so we dont need to drag and drop one by one!
and, replace multiple itens by one selected picture in one hit
and something simple that will help a lot:
Hotkeys like
ENTER > OPEN THE GUMP EDITOR
CTRL C / CTRL V - COPY AND PASTE PICTURES, just selectin the item on the browsers
ALT R > replace
etc