Over at Area 51, during the definition stage, the question "Does this design look OK?" was the 3rd most off-topic question with 24 off-topic votes, 1 on-topic vote and 3 not a good example votes.
I see two valid reasons for this:
- As Pekka and ClemDesm have mentioned, these kinds of questions have the potential to take over the site.
- As koiyu mentioned, there are other (and maybe even better) sites dedicated to this.
However, after reading what Jeff has posted at the Writing meta and what Robert posted here, I feel we can have healthy discussions if these review requests are turned into proper, constructive questions.
As far as rep gain is concerned, I have two conflicting opinions:
- I think users shouldn't gain rep for posting good or interesting designs for review. So, do make these questions CW.
- I think users should gain rep if they post insightful reviews. So, don't make these questions CW.
In the end, I think I'm leaning towards option #1.