As an 8-bit nerd I'd love to return to the days when there was, basically, just one language onboard the computer, and all vendors just used it. :) LuaOS is a cute way to achieve this, as is your efforts too, if I understand you properly.
Of course such an idea is not so foreign in the embedded sphere, where there are plenty of appliances whose LCD interface are little more than a PUTS/GETS in some shell script, but there is some merit to the idea that the ethos of a single-system-language-onboard as an Open Source target may well be worth a serious effort. I'd love to have a new Tablet paradigm where the entire thing is LuaOS and such things as MOAI are easily onboard as well .. it could represent a brave new effort against the Walled Garden Wars we're seeing ..
Oh, like a Lisp machine. ;)
(Be careful what you wish for, though; the 'one language to rule them all' world was essentially why ADVENT was written in FORTRAN of all languages.)
(Also: Was it ever just one language? Eight-bit systems always had BASIC and assembly language; for a lot of tasks, assembly language was pretty much it, unless you bought a Pascal compiler or something. Lisp machines had Lisp written in the normal way, Lisp written in an obscure way to improve performance, and microcode. Even old AS/400 systems had COBOL and RPG, which is rather a pick-your-poison dilemma but the choice was there.)
lanuages_onboard="lua" -- .. &etc.