manual reward, superblock payouts
I'm not a fan of decoupling GRC From POR, however with the current economic policy we're between 150-200, so if proven 100% secure I'd be far more in favour of manual rewards over superblock payments.
A concern though is that what if I hit the 'manual payout' button non stop, effectively dosing the GRC network with POR reward transactions which need to be verified, there'd need to be a minimum time between manual payouts (both local and network peer check) if it's a computationally expensive check that's being performed.
beacon mint
Sounds close to the old system, but i'm apprehensive given the previous system's vulnerability to which tomas brod's weaponized exploit was capable of generating blocks at will - this could have destroyed gridcoin had any script kiddle felt like it.