Could we have a button which, when enabled, would show only the currently selected DSP effect.( i.e. if you have 3 or 4 effects for a track, instead of scrolling through them, you would select the effect you want in the ‘current’ available effects list box at the left and just that effect would show up on the right ). There is space to fit another button in with the others alongside the Track DSPs ‘current’ box. I hope this makes sense 
martB ¦¬)