Just a FYI, The Binding Of Isaac: Rebirth on PS4 is NOT the original. It's a remake done by the original developer completely rewritten from the ground up. So it's not jut a basic port. There's new levels, new power ups, and new enemies, as well as a redone, 16-bit graphics style (apparently the developer never liked the original style, which is weird because I always thought the original looked pretty cool and nicer than what they came up with.)
The product description on Steam gives some good info: 
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCkQFjAB&url=http://store.steampowered.com/app/250900/&ei=VKtXVOD3A8atogTy8oLoBQ&usg=AFQjCNE7_9DVegWCG7VAk-liQ0nA7ooL8A&bvm=bv.78677474,d.cGU (sorry for the ugly link but I can't get a direct link to Steam from work.)
Having Co-op is a pretty big addition. Maybe this could be something we could try on with "Share Play."
Still playing through Bayonetta 2 and have finally almost wrapped up Valiant Hearts. I was hoping to get Advanced Warfare after reading all the positive reviews but apparently Gamefly isn't shipping it out, so I'll just keep waiting. Once I get all my Amazon gift cards in I'll likely pull the trigger on the Sunset Overdrive bundle (as soon as Amazon gets them stocked at $349) and then get MCC. EDIT: Just got confirmation of AW shipping, so I have that to look forward to also.
One of my family friends has a Day One edition of Xbox One. I asked him if he was annoyed with the price drops and inclusion of free games. Unsurprisingly, he was a tad perturbed.