I'll have plenty of time to think about what systems I want put in, the only ones I know for sure right now are...
- SNES with MultiCart
- Dreamcast with Soul Calibur, Jet Grind Radio, Powerstone 2, Crazy Taxi & Sonic Adventure, Skies of Arcadia.
For the next generation system I may be leaning toward PS4. Karaoke is a big deal in our house, and we love the Singstar line of games from Sony. Xbox tried to make their own version but it just sucks balls requiring you to constantly swap disks, can't download the songs to the hard drive, all kinds of issues. So that could be enough to sway us to PS4 rather than XBone
My other ALLLLLLL time fave retro console game is the original Parappa the Rappa from PS1, but the thing is that it's about the only PS1 game that I would care to run, so I'm not sure that I want to take up a 'console slot' with one that only runs one game. (To be honest I've considered building a full-size dedicated Parappa Cab with special button layout and big speakers, if any console game deserved a dedicated cab, for me it was Parappa)