Well, thats what my patch does, switch to straight solidcoin algo after block 14639 (180s/block, diff increase limit, retargeting period 240 blocks), but keep i0s 48 coin/block reward.
-> diff should adjust by4 after 14639, and at 4096 diff even single-digit Ghps should be able to sustain at least 1-2 blocks/hour or so.
I guess we could just disable the 7-day thing and keep i0s retargeting algo, but then we'd be stuck at diff 16384 for a looooong time.
Why not allowing difficulty to be divided by more than 4?
4 was chosen to avoid huge difficulty change but as we're now changing difficulty far more quicker we can get rid of that limit, or modifying it to 10 or 20