In the early days of sampling instruments you'd trigger a single sample that was pitch-shifted to the note you played. The next step was multi-sampled instruments where you'd trigger a different sample with different notes, the result being an increase in realism.
How about applying this concept to rigs to make tweaking rigs more akin to tweaking the knobs on the physical amp?
For example a user could create ten profiles of an amp which were identical except with the gain set from 1 to 10 and combine them into a singe multi-profile rig and interpolate (morph?) between them as the user turns the gain knob up and down.
That's a simple use based on gain but if you wanted open-ended possibilities you could make it possible to choose which profiles are varied on different controls. So my simple example would be 10 profiles spread over the gain knob but you could do the same thing for the presence or EQ controls as well. Obviously multi-profiling an amp would have the potential to take a long time as you're looking at hundreds of profiles for a single rig but that rig would feel more authentic to a user playing with the knobs.
To make it accessible to casual profilers as well as professionals you could make it up to the user how many profiles are combined. So I might only want to profile my amp with gain settings ranging from 4 to 8 but a company wanting to recreate the amp as a premium product might do many combinations of gain and EQ. For that last example the profiler could combine 10 gain levels and 3 settings (0 - middle - max) for each EQ knob (Bass, Middle, Treble). It's still a lot of profiles for a single rig -- 10 x 3 x 3 x 3 = 270! -- but i think that's still less work than goes into a lot of sample libraries; just look at something like Superior Drummer with different samples for all drums at different velocities with each hand plus all the different mic placements, etc.
You could also add amp channel profiles into rigs too rather than treating them as separate rigs so you could could end up with a single multi-profile rigs that allowed a user to change channels and play with gain like they would with a physical amp.
Any thoughts? Too complicated to be feasible? Would the interpolation between profiles sound rubbish and defeat the purpose of it? I've got no idea! Just seemed like a good idea when i was playing with profiles.