[nitrogen]

I don't normally comment on grammar, but you've made this mistake in both of your posts: "there needs" should be "their needs". "There" indicates a place, "their" is a possessive pronoun. It's common to also confuse those two homophones with "they're", a contraction of "they" and "are". Getting those straight makes one's writing more intelligible (and more native-sounding if it's being written by a non-native user of English).

Otherwise, I agree with what you're saying about letting users "design" the UI without actually asking them to design a UI.