there isn't a focus on the 3d module. Mark is working on all sorts of things as the last update showed.
As for using older hardware, supporting fallback materials isn't a big deal. In c++ land I use Ogre which deals with it nicely. You simply have a list of 'techniques' and it'll try each one in sucession until it finds one that your card supports, so the top most one is full of fancy shaders and multitextures and you just tone it down with techniques further down the list until you hit a single plain texture :) Here's an example material file... In fact... could someone wrap Ogre into blitz please? :D
http://www.ogre3d.org/docs/manual/manual_15.html#SEC24 (format section)
As for using older hardware, supporting fallback materials isn't a big deal. In c++ land I use Ogre which deals with it nicely. You simply have a list of 'techniques' and it'll try each one in sucession until it finds one that your card supports, so the top most one is full of fancy shaders and multitextures and you just tone it down with techniques further down the list until you hit a single plain texture :) Here's an example material file... In fact... could someone wrap Ogre into blitz please? :D
http://www.ogre3d.org/docs/manual/manual_15.html#SEC24 (format section)