Various GUI Suggestions - recent filters & automatic batching

1. An automatically populated 'Recent Filters' list, in the same section of the interface as 'Favourites' and 'Search'.


2. Undo & Redo would be really nice to have in the 'Image Creation' side of FilterForge (Undo/Redo works in the Filter Editor only). There have been heaps of occasions when I've been twiddling parameters and wanted to go back a few steps...



3. Automatic Background Render Queue
I've been generating a lot of 8000x8000 images with some slow filters and lots of antialiasing; these take awhile (hours).
Currently when I press 'Save Image As' in Stand-alone mode, FilterForge can't be used again until the image is finished.

What I think would be really neat is this:

When you press 'Save Image As' and have selected the filename/type/etc, the render is placed into a background queue, and FilterForge's GUI returns to normal, allowing you to adjust parameters, change filters, load a different image, etc, and then when you press 'Save Image As', it too gets placed into the background queue.

The only change required to the GUI is the addition of the Render Queue List - it would work like your typical Download Queue window, providing options for pausing/deleting/re-ordering the queued renders.

4. Display an esitimated Render Completion Time

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Also wish there was a way to get like the last used effect of a certain filter if one forgot to save a preset.

Yeah, that too!

Each 'Recent Filter' could have a list of 'recent presets,' -- saving an image could automatically save a preset to this list.
Limit the recent presents to some maximum number of entries/minimum number of days, that'd be great.