I'm still hopeful for this service and the prices get chopped down a bit. When I made the transition from PS360 late last year I missed out on a few games I wanted to play like Batman: Origins and Castlevania 2. This service is the closest we will get to backwards compatibility which is great for me.
Hell if Sony made a mini system that could play PSX and PS2 games I'd buy it or hell an add-on for PS4 I'd buy it.