Could be developed by a bad-ass open source dev or simply funded by the @hive.fund out of pocket.
Honestly bots like this already exist as Hive already has market makers.
The trick is watering one down for mass consumption.

It would also be possible to do a lot of this on the internal market.
I've always thought the idea of Swarm Intelligence (perhaps even paired with AI) would work.

At the end of the day it's simply a matter of consensus.
Where should we place bids and asks and for how much?
This is the only question that needs to be answered.
Users can place the orders themselves or with a super simple bot.