But even still, you should be careful about the mental model you're imposing on your users, especially if they're forced to literally dismantle that model to rearrange things the way they'd like.
Cognitively, it's almost more than twice as much work, once you factor in the uncertainty of messing with things you're not sure you can/should mess with. (Were they pre-arranged a certain way for a reason? Will things break if I move them?)
Which means that people are even more likely to leave your default categorization in place, so it had better be bulletproof.
But even still, you should be careful about the mental model you're imposing on your users, especially if they're forced to literally dismantle that model to rearrange things the way they'd like.
Cognitively, it's almost more than twice as much work, once you factor in the uncertainty of messing with things you're not sure you can/should mess with. (Were they pre-arranged a certain way for a reason? Will things break if I move them?)
Which means that people are even more likely to leave your default categorization in place, so it had better be bulletproof.