I think a lot of people want to post pictures of papercraft from other sites. I think you should be able to do that, as long as you put the link to where you got the design from.

Bad designs shouldn't be up-voted because "they tried". Its like giving a kid 80% on a test even though he got every question wrong, just because "he tried". Its just stupid. I think when a design gets to -10 or -15 votes, it should be taken off the site. When it gets that many down votes, it shows that people think it's a bad design.

Add more mods (This depends what the mods do). Most of the current mods are (Mostly) inactive.