Nice map, here comes the mod!
[Overall]
You should check both bpm and offset: When i test it I got about 5-7ms late at the beginning of the song, and 20-24ms at the end. (Maybe it's me, or maybe i'm too picky on this :p)
[Normal]
00:50:412 (4,5) - Spacing. The pattern is nice, but since your sliders before are really close when they are on 1/2 (pattern like 00:45:455 (1,2,3)) it may confuse some player, especially normal players
01:35:794 (3,4,5) - Check spacing here
01:38:336 (1,2,3) - You should check spacing, the way the pattern look is good, but you'll maybe have to redesign it, cause if you try to respect spacing, (2) will go on top of the screen, which is not good too. As for 00:50:412, this can be misreaded by normal players
02:07:827 (2) - Maybe you can try to align this (on top) with the end of (1). You'll just have to check spacing for (3). Also I suggest you to make (4) look like (3)
http://puu.sh/15lh <= you can try something like that (don't forget to check spacing on 02:10:370 (1) after)
02:41:895 (1) - Just a suggestion here, but I find the Finish a little bit too aggressive for almost only vocal part, maybe you should try a whistle or something else, since you've already a Finish on (2)?
[Hard]
00:55:624 (5,6,7) - This spacing here, is not really intuitive imo, maybe move the whole pattern to fit the 1x spacing?
02:02:234 (1,2,3) - Only suggestion since the pattern is intuitive, but,t ry to align this using the spacing 1x? you can still change the end of slider to get the same "cross slider" effect. 02:04:268 (5,6,7) - same here ?
02:20:794 (1,2,3,4,5,6,7,8) - Only suggestion, but can you reduce the spacing a bit, before the stream ? This stream is a bit disturbing in a hard, since you play a high spacing for going right on a stream. I think 1.60x would fit perfectly
02:41:895 (1) - Just a suggestion here, but I find the Finish a little bit too aggressive for almost only vocal part, maybe you should try a whistle or something else, since you've already a Finish on 02:42:912 (1) - ?
02:47:997 (2,3) - Maybe change the spacing for 1.8x? i feel this a bit high for this part, mapped on the voice
02:49:522 (4) - Suggestion : try to align this a bit more? something like two grid right one up should make it
02:59:183 - 03:02:997 Suggestions : I just feel the pattern a bit too linear compare to the rest of the map, you can change it or let it as it is, the timeline is good.
03:11:133 (4) - You should put spacing 1.20x on this one, like the other note before
[Lan's Sorrow]
Nothing much to say about this guest diff except for the following point (which is recursive in the song):
01:00:963 (1,2,3) - Triplets are overmapped. The BPM of the song is really low and it's not like it's a great explosion of solodrum every time... You should remove the triplets. If you want to keep the sound effect maybe you can put a slider like 00:48:760 (1) -. It's pretty annoying to hit something which is mapped on nothing, even if on some part with more music(drum, guitar and stuff), that fits, but well... it's still overmapped.
Since the map is well built, i'll Star it !