Daid... I really get the idea behind the pitch. To be honest: that argument was one of the points that convinced me as a complete n00b to go for a UM2. (So it works)
But in all fairness: once you get beyond the "printing the pre-sliced um robot on the sd card", you are in for a world of hurt. Trust me, I speak from experience.
Basically about 15 minutes after the package comes of, the entire sales pitch turns out to be a big lie and disappointment. The illusion only remains if you have someone that pre-slices everything for you and maintains your printer.
So given the complexity of the matter (at this point), we are all forced to "grow up" extremely fast, "wannabe simple or not".
So, just like you can do with Cura - once you feel comfortable - it should be possible to put the printer in "beyond novice" mode too. Because imo providing people with a printer that allows for more professional handling is as least as important as having a dummy mode on it. The dummy period will be a lot shorter than the novice/pro one
Trying to appeal to a bigger audience is IMHO a very short term vision, you want to keep your customers beyond that too. Making it seem simple only works for so long.
Just my $0.02:)