>>  Do people dislike it very much if I add -DSUPPORT_SERIAL=CONSDEV_AUTO
>>  and friends into default compilation of
>>  src/sys/arch/i386/stand/biosboot/Makefile? 
>I don't think it's a good idea. That's why biosboot_com0 is there.

 what should people do if she needs to do fresh install to machine
 without VGA?  roll a new boot floppy herself?  there needs to be
 bootfloppy-serial, at least.

itojun