I'm now making a new movie of Rockman.
Besides some general optimizations, I have two new major tricks, one of which was contributed by Finalfighter.
Because of the other one, I'm now able to play Elecman as the first level of the movie, allowing me to later play the Gutsman level using the magnet beam.
The new path is Elec->Ice->Fire->Bomb->Guts->Cut.
There's one dilemma though: Killing Elecman using Guts weapon takes about 8 seconds, whereas killing him using the basic weapon takes 31 seconds. This is a major problem which only appears if Elecman level is played before Cut/Guts levels.
If using the magnet beam in Gutsman level saves 23 seconds over a non-magnet-beam version of Gutsman level, this plan works. The lift sequence saves about 13 seconds.
Even if I'll have to revert to the old path (Guts->Elec->Cut->Ice->Fire->Bomb), I guess I can make up about 30 seconds of improvement compared to the published version.
WIP here:
https://files.tasvideos.org/bisqwit/bisqwit-rockmanv6-incomplete.zip