you don't need to get rid of sound sources - you just need to make space for much modulation and utilities - it may be by removing the drum modules - it may be by adding another row (or 2)
NB I was suggesting using the switched multiple as a trigger combiner - a la Steevio and MylarMelodies
it really depends how you use the disting/fx aid xl etc - if you set them on a specific algorithm and leave it at that then they are effectively 1 knob per function - if you need something else you can take a quick look at the manual and get it working in a few minutes
i've had a disting mk4 for 4 years or so and it's almost always been used in the tape delay setting and my fx aid xl has been a stereo lofi junky since I got it (6 months ago)
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities