Maybe disallowing higher snapped antiflow dashes after a higher snapped hyperdash? The current rule is prohibiting too much but I think it should be limited somehow.Agree with this part. In the case that was pointed out in https://osu.ppy.sh/beatmapsets/769584/discussion/1618190/timeline#/698216, this pattern should be completely rankable and fine.
The distance between the higher snapped hdash and the dash is quite large, being a full 1/1 gap.
I'm not quite sure how to word this, but my suggestion for a solution would be to allow dashes after a higher snapped hdash in the case that the snapping of the place you want to put the dash is more than 2x the amount of the higher snapped hdash's snap.
Example would be, if you have a 1/4 hdash that qualifies as a higher snapped hdash, you would be allowed to have a dash after this if the gap was 3/4 for example, but not 1/2.
This would allow larger gap dashes to exist which are completely playable for a rain level player after a hdash. On the other hand, a 1/4 or even 1/2 gap dash after a 1/4 hdash isn't the easiest for a rain level player, and are much suited for overdose levels.