My longer-term business plan involved something like that (
http://devtome.com/doku.php?id=development_exchange) but actually directed at the opposite non-core devcoin bounties and work, although I agree a more structured way to organise bounties would be helpful.
Very interesting to hear about that.
I agree that we need something that brings demand and supply together, so that things that are wanted are created, and things that are unneeded are shunned.
(ofcourse it's not that easy, because how do you know what is needed? Sometimes a solution is only visible in hindsight, for example you do a lot of research & development that could be considered wasted in hindsight, but was nonetheless necessary. Sometimes it's not a targeted process.)
People who visit devtome (or other devcoin "departments") should have an easy possibility to express what they want and need.
Also they should have a possibility to easily check if someone else has already started a project that fits their own specifications.
Something like kickstarter, but instead every registered user can give his one vote/share of the total 180 mill.
Also there should be a possibility to donate your own devcoins (not from the 90%)
There must also be a possibility to take pledged money back if a proposed project/development does for some reason die or selfdestruct.
So many thoughts...