...and switch syslinux.iso over to it: syslinux-3.86-alt4's
(actually opensuse's) gfxboot hackery doesn't properly init
video mode so memdisk-started freedos has console troubles
(and yesterday's hdt.c32 hassles could be avoided as well
it seems).  And that's being implemented.

Mid-term plan: try switching to syslinux4.

PS: CLI fallback was actually a bug in hdt from syslinux <= 3.86-alt3