Crazyhouse

I have noticed that because crazyhouse is a deeper variant than other chess variants, computers take longer to properly evaluate positions. For example, chose I random, fairly complex chess position, and over the course of ten minutes the evaluation changed from +1.3 to +1.2 to +1. When I did the same with a crazyhouse position, the evaluation went from -0.8 to -2.3 to -1.8. My suggestion, therefore, is to give users the option of a deeper analysis when doing a computer analysis of a crazyhouse game, to cope with the fact that it is just harder to accurately evaluate crazyhouse.

we have to wait for quantum computing to become affordable

I believe you are already able to force a deeper analysis of any variant simply by clicking the plus sign near Stockfish's depth level counter.