Nothing wrong with being unique. But there's nothing wrong with borrowing elements from other websites either. If the staff of Devmaster.net followed your philosophy 100% then they would get rid of this message board right now.
I know alot of people who visit this site daily who don't really use the 3D Engine Database nor do they care about it. Also, if they wanted a wiki on game development they would go to gpwiki.org.
Coming up with completely new and unique editions for this site is very difficult. Until someone can come up with something whynot, for the time being, implement services found in other sites but better?
We're all concerned with improving this site to becoming the best on the web, or one of the best. Don't you think making Devmaster a complete site--one with features borrowed from others but implemented better, and with new and unique features not seen before--is one big step to the idealized site we all hope for?
Some other elements this site borrowed from others:
Wiki(very slowly growing; gpwiki.org has more content)
IRC Chat(dead; #gamedev is more active)
Message Board(growing; gamedev.net is much more active with some bad apples in the community)
What's wrong with borrowing a few more elements? Alright forget about competiting. Some of us just want Devmaster to be an idealized complete site.
Some of us are extravagant and wouldn't mind pumping the "spirit" of game programming up in steroids.