Futsuu & Muzukashii:
On designs:
Kiais
Are mostly identical. You should definitely avoid that with lower diffs. Please recolor some of the kiais to reflect song progressions and lyrics differences
I suggest 4 groups:
for #4841668/12824767
add a new timing point and keep the old is unsuitable.
非继承时间点(红线)只能用于测定或重置时间轴。 多余的非继承时间点(红线)可能会影响主菜单脉冲特效或导致谱面时间轴偏移,在使用 Nightcore 模组 时也可能会出现多余错位的打击音效。
add new timing point is redundant.
Now it looks good!
currently the timing seems a bit late (-10ms seems better), and the nightcore beats are not aligned with the music currently
you can add these timing points to fix this:
2620,530.973451327434,4,1,0,70,1,0
55717,530.973451327434,4,1,0,80,1,1
91823,530.973451327434,4,1,0,70,1,0
144920,530.973451327434,4,1,0,80,1,1
181026,530.973451327434,4,1,0,70,1,0
200141,530.973451327434,4,1,0,70,1,0
236247,530.973451327434,4,1,0,80,1,1
272353,530.973451327434,4,1,0,80,1,1
309521,530.973451327434,4,1,0,70,1,0
and remove the timing point at 506ms, since that introduces an unnecessary nightcore beat
Overall, the three difficulties are very "overmapped" with respect to their difficulty names. To be specific, mostly ranking criteria's break requirements:
Futsuu:
At least 1 rest moment that is 2/1 or longer should be inserted after 32/1 to 36/1 of continuous mapping.
I̶f̶ ̶a̶ ̶F̶u̶t̶s̶u̶u̶ ̶d̶i̶f̶f̶i̶c̶u̶l̶t̶y̶ ̶i̶s̶ ̶r̶e̶q̶u̶i̶r̶e̶d̶ ̶a̶n̶d̶ ̶u̶s̶e̶d̶ ̶a̶s̶ ̶t̶h̶e̶ ̶l̶o̶w̶e̶s̶t̶ ̶d̶i̶f̶f̶i̶c̶u̶l̶t̶y̶ ̶o̶f̶ ̶a̶ ̶b̶e̶a̶t̶m̶a̶p̶,̶ ̶i̶t̶ ̶s̶h̶o̶u̶l̶d̶ ̶a̶l̶s̶o̶ ̶f̶o̶l̶l̶o̶w̶ ̶t̶h̶e̶s̶e̶ ̶g̶u̶i̶d̶e̶l̶i̶n̶e̶s̶:̶ ̶1̶/̶2̶ ̶p̶a̶t̶t̶e̶r̶n̶s̶ ̶s̶h̶o̶u̶l̶d̶ ̶n̶o̶t̶ ̶b̶e̶ ̶l̶o̶n̶g̶e̶r̶ ̶t̶h̶a̶n̶ ̶f̶i̶v̶e̶ ̶n̶o̶t̶e̶s̶.̶ It is not a required Futsuu
Muzukashii:
At least 1 rest moment that is 3/2 or longer should be inserted after 16/1 to 20/1 of continuous mapping. Using at least 3 consecutive rest moments that are 1/1 is an acceptable substitute...
Oni:
At least 1 rest moment which is 1/1 or longer should be inserted after 16/1 to 20/1 of continuous mapping.
While you may get around the break requirements with bpm scaling in F&M, it is still recommended that you add more break sections evenly throughout all difficulties.
Take oni for an example:
If you wish to emphasise more on the drum, you could delete notes such as 00:55:461, 00:59:709, 01:03:957, 01:12:453.
Alternatively, if you wish to emphasise more on the vocal, try deleting 00:56:789, 00:56:922, 00:58:913, 00:59:045, 01:03:283, 01:03:426, 01:03:559. And possibly adding some more notes in other places to keep up the density.
To sum up, it's often a choice of what to hear&map and what to unhear&ignore, everyone has different choices. But taking up all sounds may lead to a map with no emphasis, and often too "bland".