on the subject of console glass-tty emulation:  Linux has
a utility called SVGATextMode, which can frob fairly arbitrary
parameters of an SVGA card's text modes, and automagically
resize the linux pcvt-like console emulator windows appropriately.

I've used it to set non-standard char cell sizes and dimensions on
laptops; to use high-res displays on SVGA monitors; and to cope with
machines equipped with non-multisync monitors, or multisycn monitors
that  don't do the default SGVA rate (e.g., monitors recycled off  RS/6000
model 370s.)

It uses a very xf86-like config file to specify chipset, clocks, etc.
For example, I use

	ChipSet "S3"
	ClockChip "ti3026"

	HorizSync   63.36
	VertRefresh 60

	# Use 1024x1024 mode for text
	"128x64" 89.2108 1024 1048 1208 1408 1024 1027 1030 1056 font 8x16

on a machine with a monitor that _does not_ work with the standard
VGA 80x25 mode.

Is there any equivalent for NetBSD? 

If not, would it be possible to provide a config-time hook to hardcode
gross hacks like this into either pccons or pcvt?