In fact, you can't really run any other legacy option ROMs without legacy VGA support. You can run legacy SAS option ROMs for example and still do UEFI boot bec

In fact, you can't really run any other legacy option ROMs without legacy VGA support. You can run legacy SAS option ROMs for example and still do UEFI boot because of similar support for Int13, but to even run them require VGA text mode to be working.