Sorry, but this is just an open IT question......
Why not make LFS software (OS) independent and go with openGL, taking a long term view this would seem to me to be a sensible choice.
It will work with win ???? and it will work with Linux.
Yes, Scrawen is still with XP, which expires in April, but IMHO, openGL has a future........
Just giving my opinion, which, according to my partner, is wrong anyway as it's my opinion
If you have issues with 7 then WTF ??????