Here's my number one feature request that wishlists never seem to support: partial contributions. This is even more the case with baby registries, where families might want help with high-cost items (carseats, cribs etc) but where well-wishers are generally going to contribute something in the $20 range.
Ideally, I want to be able to contribute $20 towards that $80 carseat. If A, B & C also contribute, the item should be sent as coming from me, A, B & C. If only myself and A contribute, you should be given the opportunity to put in your $40 to complete the purchase.
Just my 2 cents.
[Edit: Basically I would like the lovechild of a wishlist with something like http://www.chipin.com/ - do that and you can really differentiate yourself]
We actually support that at Wishpot (so, we may be the lovechild you're looking for!). Any wish can be enabled for contributions, and then instead of purchasing it, the "buy it" button turns into a progress bar. The cash goes straight into your paypal account - we don't take a cut and aren't a middleman. There's a little how-to here: http://www.wishpot.com/help/how-to-contributions.aspx
Let me know what you think, would love your feedback - tom at wishpot.com
I like the idea, but doing it would involve a lot of payment processing shenanigans (not an unsolved problem by any means - i.e. kickstarter - but definitely a significant hurdle for a weekend project).
Ideally, I want to be able to contribute $20 towards that $80 carseat. If A, B & C also contribute, the item should be sent as coming from me, A, B & C. If only myself and A contribute, you should be given the opportunity to put in your $40 to complete the purchase.
Just my 2 cents.
[Edit: Basically I would like the lovechild of a wishlist with something like http://www.chipin.com/ - do that and you can really differentiate yourself]