How about allowing a extra Inventory windows to be created. It could be on a different tab, merged with an existing window (including a different Inventory window, or detached. Having two inventory windows would make for easier resorting and review of inventory items, as different areas of the inventory could be shown in each Inventory Window. Extra Inventory windows could have a number after them to identify different Wiindows (e.g. Inventory1, Inventory2, etc).
This suggestion would duplicate functionality found in the graphical viewers. I made a similar suggestion ages ago, but thought it worth suggesting again.