00:09:137 - 00:14:189 - should rather be mapped as 1/1 since the extended vocal has no clear snapping compared to - 00:07:242 - where you have a new vocal every new red tick. I recommend to move - 00:09:295 -> 00:09:926 - and - 00:14:347 -> 00:14:979 - so it gets more consistent in structure and also has a more natural player experience.
even tho it is the same on terms of vocals - 00:16:558 - 00:17:821 - 00:19:084 - is always differently mapped which seems a little weird to me. I think the idea of - 00:19:084 - is very nice to follow the vocals great so implementing them on the other two spots can work nice so my idea is to make - 00:16:716 - xx xx instead of x x x because destorying the finisher is not really good. For - 00:17:821 - I think you can delete this note since the vocal is not as clear as - 00:19:084 - and start the xx xx from - 00:17:979 - on instead.
delete - 00:20:505 - first of all since is it very hard to hit a chain of xxx xx xxxx on a futsuu in a non kiai section and also are you only mapping to vocals in this whole chain of notes and this is the only note which is not mapped to the vocals so it makes sense to delete it