Considering small N difficulty algorithm

[zawy12]

I just wanted to mention that short-windows should be considered. The first chart shows how HUSH and Zcash basically give away blocks to medium-sized miners. This is simulated, but it's based on what I see in those coins every day (576 blocks a day). The second chart shows what would happen if they tried to attack Degnr8's algo with N=15. Basically, they would not bother to attack it. Difficulty would swing all the time, but I think it would not hurt anything. Karbowanek can show you real data for N=17.

With N=50, attackers will probably do basically the same thing they are doing with HUSH and Zcash. Is it a problem? I think the only problem is that the attackers are more likely to sell than the constant miners, so the slow difficulty is a small downward pressure on price. But there's good karma in protecting the little guy.