M4M~
Salad
This salad makes me very comfortable. It doesn't have any kind of anti-flows, which makes it easy to read. Although it might be a little too easy for a salad, but since your mapset doesn't have a cup, it is perfect to set the difficulty as this.
One possible mod is to replace 00:09:788 (2) by a spinner. This could varyfy the final scores.
Platter
Several gaps might be too big for a platter-level player, from my perspective:
00:02:788 (4,1)
00:05:988 (4,1)
00:12:988 (3,4)
00:14:988 (1,2)
00:17:788 (6,1)
00:18:188 (1,2)
00:28:988 (8,1)
00:29:988 (2,3)
I'd suggest you either enlarge them into hyperdashes or shorten their gaps. Besides, there are also other mods:
00:13:588 (4,5,6,7) - This is too hard for platter. Please move object 5 to object 7's position or reverse the position of 5 & 7
00:36:588 (5,1,2) - Never use consecutive hyperdashes in platter. You may reverse the position of 1 & 2
Besides, you may also consider turning 00:09:788 (1) into a spinner. However, since I also really appreciate the pattern before and behind it, I'm not going to strongly suggest you do this.
Rain
I think there's nothing much left to mod after your update on Jul 15. However, As you set CS=4.5 and AR=9, though still within the allowed range for rain criteria, I think it might be a bit too hard for rain and you don't have to push everything to maximum. Please consider the possibility to set CS=4~4.2.
Alongside, Please also consider whether you can turn 00:09:788 (1,2) into a spinner. But same as in platter, you can also keep it because the pattern is great.
Playback Time
The map is perfect from my view, only it's far more difficult than the stars it shows.
You can add whistles for the sliders' tails of 00:02:588 (3) and 00:08:588 (2)
Hope these suggestions could be helpful!