I would like to see stuff like HIL bus emulation, EISA, Vectra emulation, and Gateway PC (e.g. 4DX2) emulation in the future.
Sadly, I couldn't find the BIOS file for the Gateway 2000 4DX2.

If you want the BIOS file itself, DM me on Discord at: Sauce#4632.
Thanks!
~Sauce