Any name for the coin?

And how about difficulty goes up 10% per so many blocks high hash but goes down 50% per same amount of blocks when low hash.
As the coin dies if it does it gives the little guys something to mine.
How about
Reverse payout scheme. Difficulty up ----> more coins for the miners.

So you get the same amount of coins always.

100MHASH = 1 coin per day.
If the networkhash is 1GHASH, 10 000 coins are given to the miners every day.
If the networkhash is 100GHASH, 1 000 000 coins are given to the miners every day.
....
Expensive, but secure
Good for the miners, and not so good for the investors.
Good idea but it means emission is unpredictable which means less speculative investors will bother.
It would need some real world use or some incentive for people to hold it.