I’m not sure if this is already possible in Linux.
Please tell me if it already is.
Take this screenshot:
http://www.out-of-order.ca/tutorials/ardour/images/fx.png
Imagine if you could assign the LADSPA plugin parameters to endless encoders
on a BCR2000. You could have all those plugins open and control them
with a MIDI control surface(BCR2000, BCF2000, UC-33e,etc) in Ardour.
Knobs, faders, buttons, etc would all work via MIDI. Maybe you
could also save these settings to a template and load/unload them at will.