modding the saturn to play burned games is as easy as saying fuck. just open your saturn and put a piece of tape over the lid connector so it always thinks the lid is closed. then do the swap trick when you want to play it.
It's would be nice to play and English option. I have policenauts but never fully started playing it. Play though and love snatcher on the Saturn. As I recall Policenauts is a little more text heavy than Snatcher and requires a little more Japanese reading comprehension.
I know zero Japanese and I have beaten the Saturn version, the atmosphere makes up for not understanding every detail. it also supports the 3d controller so you can use that for the light gun sections just like with Virtua Cop!