00:50:137 - 00:53:977
I think the length of LN like 00:50:137 (50137|0,50137|3,50257|2) should be shortened by a 1/4 snap. I personally think the gap between it and the Hard diff may be a bit large. (optional, maybe I am just nitpicking on this)
Same part: 02:22:297
01:10:897 (70897|3) - I don't think the music here is anything special compared to the other parts, so I think it should be a consistency issue, change this to rice or change 01:09:937 (69937|3,70417|0) to LN will be fine.
01:13:177 - 01:27:577
In this section, I think notes like 01:14:017 (74017|3) and 01:15:937 (75937|0) are unnecessary. From musical point of view, double is used to represent drums most of the time in the whole map, and there are no drum sounds at the position of these notes; and from playability point of view, jumpstreams like 01:13:897 (73897|2,73897|3,73957|0,74017|1,74017|3,74077|2,74137|3,74137|0) that include jack (01:13:897 (73897|3,74017|3,74137|3)) may be too difficult for this diff, so I think delete these notes will be better.
Same part : 02:46:177
01:22:897 (82897|0,82957|2) - Consistency issue? Only the processing here is different from the other parts (such as 01:14:857 (74857|1,74857|0,74977|3,74977|2,75097|1,75097|0,75217|2,75337|1,75337|3), 01:18:697 (78697|2,78697|3,78817|1,78817|0,78937|3,78937|2,79057|1,79177|2,79177|0)), their music should be the same.
01:27:577 - 01:28:417
I understand your design so I won't suggest you change the position of 01:27:577 (87577|0,87577|3), but the positions of the following drum beats can be expressed in a better way, instead of just completely imitating the 01:12:217 part, like this:
At the same time, in order to improve the structure, I strongly suggest you also modify the 01:12:217 part, check this #4617945.
01:32:437 (92437|0,92557|1,92677|2) - For consistency, I recommend moving them up a 1/4 snap.
02:28:417 (148417|0,148417|3,148657|3,148657|2,148897|3,148897|0) - I think this is probably a mistake, I didn't find anything special about the position of these doubles in the continuous drum beats of this part. I personally think that adding doubles on each white line is enough for this part.
Same part: 02:28:057
