Oh yeah, what ever happened to your Rnds Pacman Ryan?  
Anyway, I also had an idea like this..... problem is not many arcade games port very well to Rnd.  Which ones are you doing Burnimator?
I think it is possible to do pacman, with the ghosts overlapping the dots..
And anything like Galaxian and Pheonix should be easy...
I had a bizarre idea to do Mario Bros and Donkey Kong, but I got bored of it.
I was very, very close to doing a Doom clone!!  I only did it as a joke (see the post about mouse movement), but it took so long that it wouldn't be funny anymore!  You could walk down a corridor, but you couldn't turn around!  
