I haven't heard back from the JRoller guys, but I would have to assume that they'd agree with Allen on this. We need to allow old and new macros/models to exist in the same theme to ease the transtion for bloggers who want to move from 2.0 style to 3.0 style.
That's how the code in the Roller 3.0 branch works now. Old and new can co-exist. - Dave
