I know there was a thread fairly recently where someone proposed renaming the intervals in the user scale menu of the harmoniser. I think their proposal was to use note names instead of intervals but I remember thinking at the time it seemed a bit overkill probably a backward step for most users.
However, I have just spent a fair bit of time trying to program a user scale and OMG it is unintuitive
A real mind bender in fact.
At the moment scale steps start at 0 and go to 11 (VERY ROCK 'n' ROLL but not exactly consistent with most music theory). This is totally bonkers for trying to figure out which scale step you are trying to harmonise. I am sure I would eventually get used to it with enough practice but surely it would be more sensible to just rename the scale steps 1 to 12 with one being the root as it is in traditional music theory. I love the harmoniser guys but I don't think you need to reinvent centuries of tradition to implement it