[NM] 00:00:320 - to 00:21:893 - Might use the soft sampleset same as puxtu's diff since the music starts out pretty quiet here but the kick samples stand out a bit too much. You could also have them all be whistles like the other two diffs as well, but I think it's fine either way.
[Eedow's HD] 00:33:016 (33016|0,34027|3,34364|3) - 00:35:376 (35376|2,35713|3,38072|3,38409|2,39421|1,39758|1,40769|1,41106|1,42117|3,42454|3) - Not really required since it's skipped consistently within the section, but to match the hitsounds of the other diffs, I might add soft-hitclaps here
I don't think it's a big deal to have different hitsounding between the diffs. It happens all the time both in std and mania especially when the hitsounding is taken care of by the gd'er. And yes, as you said the HD was remapped since the dq which would make that mod irrelevant. I was told by eedow that he did apply the mod but remapped shortly after here. The reply, however, was not formally posted. Apologies for the inconvenience there but I hope you understand.