Welcome the the Fusion 1.8 / beta 2 release.
Some features:
Working login
Game switcher / default packs
Better UI
performance
...more
coming in the full version v2
Login reloader
Classpath modification to load the latest lwjgl (2.5x performance on M1/ARM)
Game Drives
Better performance mods / more profiles
Resourcepacks shaders etc across profiles
StickyConfig -- different config profiles you can switch between
Servers- launch a minecraft server locally
Server share - launch a minecraft server not locally