DoktorEvil
Banned
I think it's pretty huge. Anything that brings more people into current-gen consoles is a good thing overall.
It's smart on Microsoft's part. If a 360 player is trying to decide between moving to an XBox One or a PS4 and the XBox One will play their old games too, it's a huge selling point.
If Sony announced backwards compatibility as well then it wouldn't be such a big deal in the big picture, but as it stands it's a huge selling point considering how similar the two consoles are otherwise.
I was barely interested in a Xbone until this was announced.
Once the details are ironed out, I'll definitely be purchasing soon.