Because of nostalgia, I decided to open Rockman Exile up and see what I can do. I've entered the boss door 4 frames faster so far at Airman. I found better positions and subpixels to make clouds to appear sooner. I also managed to fetch some subpixels from random places.
I compared against this WIP I found from a rejected submission page and aglasscage posted it there around ten years ago, http://dehacked.2y.net/microstorage.php/info/813642668/ExileTAS_002_woodman.fm2