I would change some of the Special Weapons X gets from small, medium, and large weapons. There's nothing wrong with the Thunder Dancer, but the rest, no...

Let Dashing and Air Dashing for X be one of Dr. Light's Leg Upgrades.

Add the Upgrades of Dr. Light from Mega Man X3 somehow using more Constructo Mods with the Neutral Armor?

Zero should have his Z Buster from Mega Man X3 too!

Alia should have the Arrow Shot from Mega Man 8 Equipped.

These are the changes I'd make for Mega Man X8 Remastered for the Nintendo Switch physical copy.