Your maplist is always full of awesome music. I love you for that.
Just throwing some suggestions:
[Lounge]
00:06:946 (3) - bend it the other way so it would face bottom, smth like
http://osu.ppy.sh/ss/587713. Cursor moves more natural this way.
00:22:111 (2) - how about this?
http://puu.sh/1TTTP for same reasons.
00:33:979 (3) - suggestion
http://puu.sh/1TTUy for same reasons.
00:36:946 (1,2) - this way cursor should go in an arc
http://puu.sh/1TTXv maybe.
00:57:056 (3) - suggestion
http://osu.ppy.sh/ss/587726 for better flow.
01:04:968 (4) - curve this one a bit?
http://puu.sh/1TU2d01:07:935 (4) - 5-10 grids to the right
http://puu.sh/1TU2G for same reasons.
01:12:221 (3,4,5,1,2,3) - would be cool if you could remap this part so that last notes 01:14:858 (2,3) faced the center just before the spinner starts (since it's not a hard diff that would also make it easier and more intuitive to play). This is how I did it real fast:
one+
two, but you can probably find you own (and better) way.
[Ambient]
00:13:210 (1,2) - flow suggestion
http://osu.ppy.sh/ss/58774200:21:122 (2) - move this 5-10 grids down for same reasons.
00:40:243 (1) - I'd move it somewhere around here
http://puu.sh/1TUeS00:53:430 (4,1,2) - this is awesome :3
01:04:639 (4) - move this higher?
http://puu.sh/1TUh501:11:232 (1,2) - curve the pattern?
http://puu.sh/1TUhI[Collab]
I'd say AR-1. It's waaaay too fast atm for this chilling track.