Yeah there are a few things i dislike.

Firstly as a "renter" it pisses me off i have to keep adjusting as i cant get any miners. I put it at the top rate then someone goes higher. Would be better to have a 10 min minimum or something like that before switching,

Also paying to cancel when i dont want to pay ridiculous rates anymore is just stupid. Why not put a pause option or a reduce fee option?