The dev fund idea's an interesting one. Having a portion of each block reward going to a certain address would require a hard fork, there's no way around that. But it wouldn't take much work.
It'd probably be best to use a multi-sig address controlled by a few team and trusted community members.
Block time: ~64 seconds
Blocks per day: ~1350
Dev fund stipend per block: 0.5 MOIN
This would give the fund about 675 MOIN per day and 246k per year. At current prices that's around $860. Admittedly, that's not going to pay for much development time, but I still think it's a good idea. To get us to a point where the fund's worth something substantial will require a decent amount of unpaid work, but it'd at least give us a better chance of achieving self-sustainable growth in the future.