I'm a truly hopeless coder so may be misreading the code, but doesn't your change simply vary the reward with the difficulty? I.e higher difficulty means a lower reward?
Surely that is exactly what every other coin does? Albeit by making solving the block harder.
Could it not vary more irregularly with the remainder as before but still reward "something" in every block?
The difference is the amount of coins going into circulation directly reflects the difficulty. No other coin (that I know of) does this. Yes the difficulty does determine how much the
individual miner may receive but the amount of coins being generated is all ways the same.
Wow, writing the above made me think... What if someone made a coin that changed the block time depending on the difficulty? Say making the block time longer if the difficulty went up. (blowing my own mind right now)