Interesting idea. I think A-Z has been in planning for some time so changing course at this point is not feasible. But I think your idea is interesting. We are talking about putting together a community fund for stuff like this. Basically the community delegates to a pillar for the purpose of generating rewards for a fund to be allocated back to the community. Could be used to fund bounties on smaller assignments.
Yea I agree, perhaps after the first couple of programs of AZ (hyperspace is the first one) we can implement this bounty system for the features still not implemented ^^ perhaps we can even make this bounty system, although it being part of Syrius would be better.