Questions to devs that have a released/completed PS3 game

[Butta]

I would like to know for the devs that have released a PS3 title if they would use the same or different approach given the choice for creating their next PS3 title. I realize that in most cases you may end up reusing and tweeking your previous engine (for time and budget reasons).... however, given the choice what approach might you use and where do you think this new approach would provide the most benefits (lighting, better memory usage, faster frame-rates, etc.)