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 at some point in the future.
IMO think that's a reasonable staking percentage, the cost of exchange listings is insane, not to mention all the other associated costs. I really like the "MoinMovement" community fund idea, that rewards people for participating, however, I always felt bad for receiving the rewards and watching the fund drain slowly over the past few years. So, I'm all for a implementing this change.
I agree that exchange listing fees are crazy but at least MOIN is already listed on a top exchange in Livecoin and we can then work from there at getting MOIN listed on some other exchanges like Graviex and maybe even Unnamed exchange as these exchanges don't cost all that much compared to the other exchanges and they both seem to be doing well.