Depending on whether you're using Gimp to draw or to tweak photos, the tools
you're using are vastly different. It would thus be nice to have Gimp gui
"presets" available for specific tasks (photo tweaking, photo composing,
"painting", etc.). You'd be able to edit these presets, and come up with new
ones as well. 

Basically this bug would depend on the implementation of several other
enchancements first. The first is being able to edit the toolbox, Gimp 2.2 will
apparently take care of this (thus, a photo preset will only show transform and
color adjustment tools, while paint presets will focus on painting tools). The
second would be to implement a "preset filters" (or "Frequently used filters?")
dialogue, which includes the most commonly used filters for the chosen task
(blur and sharpen for photo for example). This set would be editable as well.
There have already been enhancement proposals for grouping filters I think, so
I'm not submitting this independently. Alternatively a preset would set a number
of shortcuts for commonly used filters (mapped to the F# keys perhaps?). This
list would also be editable.

Of course, a person can always set up his dream interface himself once the above
are taken care of. But a Gimp user probably doesn't always do the same tasks
with Gimp, so having different presets would be convenient. Having presets
shipped with a new Gimp would also allow a new user to have quick access to
everything he needs, without being confused by all the tools (ever met a new
user who wasn't at least a bit confused?).