I noticed that the Ice Wave graphics haven't been changed. I thought for sure you'd have replaced them (along with the graphics for Slash Claw) with their canon 8-bit versions from Mega Man 10, just like how you made Slash Man's canon 8-bit appearance his default skin in V4A.
In both Mega Man 8 and Mega Man 7, Frost Man and Slash Man's graphics for Ice Wave and Slash Claw respectively are different from the versions that Mega Man uses. As such, the ones used by the Weapons Archive boss (which emulates the boss patterns) should be treated as the boss graphics, not the copy weapon graphics.
This is even supported by the way the MM10 graphics are drawn, which are much closer to the boss attacks than the copy weapon version.
Slash Claw:
MM7 (slashman)
(Couldn't find an actual rip of boss Slash Claw, sorry)
MM7 (megaman)
MM10
Ice Wave:
MM8 (frostman)
MM8 (megaman)
MM10
Basically, MM10's Weapon Archive graphics are for the boss attacks, not the weapon attacks, like MM8BDM would be trying to recreate.