yes that's it

shaders i don't mind i already have the ones i want with TV3D and Ogre3D
i proposed like you said :
a method of availability for all 3DGS users like you said !
yes a demo, structured with a FX File , comments tags , some minimum script and
use always sun if lights influences and one or two nearest lights !

well i don't mind , it was an idea , now 3DGS users can do like they want
some don't mind to have some methodology , availability , well
not my concern anymore