Not a Taiko BAT but trying to help out here, I lack on time so I have only checked the Muzukashii so far, don't kd it
it's not worthy ;w;[Muzukashii]
00:03:065 (9,10,11,12,13) - Hmm.. Simplier pattern can do it too! You can use ddkkd here because it plays much easier as dkkdk and it still sounds reasonable.
00:11:173 (39) - To be honest this looks more clearer to keep it consistent with 00:10:362 (36,37,38). Use k here instead of d.
00:04:889 (16) - I say the same as 00:03:065. Change this circle into d.
00:15:531 (3) - Well.. I really dislike it because I heard so many times that people cannot deal with such rhythms (I use this sometimes for my own Diffs, just saying) and I think it won't hurt to remove it. Besides of that I find that you can add on the circle before Finish then.
00:17:051 (8) - I find that this can be removed. It's more leading to a fixed rhythm (00:16:241 (5,6) ) and gives a smoother play feeling for Muzukashii player.
00:18:470 (13,14,15,16) - Using the same pattern as 00:15:227 (2,3,4) - even when I am not a big fan of this part - looks more consistent and leads better.
00:19:585 (17) - I highly recommened to remove this (specially if you do the suggestion above). I find it really not neccessary to use 1/4 in Muzukashiis as long
the Instrumental of a song doesn't give the space for it. You've mapped here on the vocals but I find this more bas as good tbh.
00:20:295 (19,20) - Remove the first circle and move 00:20:497 to the blue Tick. Before anyone complains that this is a contradiction: It isn't. I just suggest how I think and what actually sounds good. However having a single circle at 1/4 is passable for at least 95% of the Muzukashii player.
00:21:511 (23) - Same as 00:17:051.
00:22:119 (22) - The finish here sounds weird.. Not sure if someone named this before but I suggest to remove it.
00:22:727 (24) - For the sake of the (worse) Taiko player: make this as d (kddd).
00:24:754 (31) - This is imo a horrible transition to the next part for a Muzukashii. I highly recommened to remove it.
00:24:957 (31,32,33,34,35,36,37,38,39,40,41,42) - Actually you can use the same rhythm as some seconds before but please follow the suggestions I did as above that it makes sense at all.
00:21:714 - 00:28:200 - So this part should look like that: D d kddd dk d k d d kddd dk d k - It sounds much better, it's simplier for Muzukashii player and has way more consistency. At least this is one of the parts which can be easily kept consistent.
00:28:605 (49) - Well, I would find it better to remove it. As you can see the player has no break phase before and I think it's needed, even for a TV Size song. dk after the circle is neat to play so you can let them how they are.
00:29:416 (51,52,53,54,55,56,57) - How about splitting this into kdk kdk? Sounds more enjoyable for this kind of Difficulty.
00:31:038 (57) - kkd fits better as dkd.
00:31:849 (60) - I think it won't be a problem to move it to 00:32:051. Also change it to d. k doesn't sounds as good as d imo.
00:32:862 (63) - That sounds too much.. also, for a Muzukashii - actually for every kind of Difficulty - it has a better transition to keep this time unmapped.
00:33:268 (64,65,66) - Well, I don't like the Triplet. I think this part can be used to add a single Circle on 1/4. Remove the 1st and 3rd Circle here. And then change it from d to k.
00:34:078 (67,68) - The Transition from 00:33:876 (66) to 00:34:281 (69) sounds meh. Remove these Circles here for a "break phase".
00:34:484 (70) - It sounds too much and decrease the emphasis for the following part. You should remove it.
00:34:687 - 00:47:660 - For this part you should try to use the hints and suggestion I gave you for the 1st part (00:21:714 - 00:34:687) since these parts are vey similar.
00:49:484 (137,138,139) - Hmm.. this plays weird. I find that this can be improved a lot. One idea I have is to move 00:49:889 (139) at 00:50:092 (and change it by the way into d). Then change (137) to d and (138) to k.
00:50:295 (140) - Removing it seems more reasonable after you made the suggestion above.
00:50:700 (141) - I would suggest to remove it too. I will explain why (read below).
00:50:903 - 00:54:146 - To show how I want this part a screenshot will help you much more as tons of letters. orz
http://puu.sh/3OFK2.jpg01:00:430 (173) - That comes way too sudden, please remove this circle.
01:02:051 (178) - I think this is just too much and not needed to play.
[...]
Well, Makar said that he has already started his mod. derp I will finish the Muzukashii Mod asap.
I hope this can help you a bit for now.