only noobs think of redundancy in modular - at least from just looking at a rack
a module is redundant if and only if you never use it - and the only person who can work that out is the actual user of the rack - this is because how you patch may be different from how I patch etc etc
duplication of both functionality and specific modules is useful once you get past a couple of voices
"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