In simple words, I'd want everything to become much faster/more responsive - from how fast the OS boots, the dashboard responsiveness, how fast the games launch/levels load, how fast the files download/install/copy, and so on. PS3/X360 severely lacked RAM and even just reading a message during gameplay was a pain in the ass, PS4/XB1 on the other hand seriously lack the CPU power, so every single task/operation be it OS or game related is being hurt big time, so this time around, with proper CPUs, lots of RAM, and SSDs on top of that, I'm pretty confident the next-gen consoles will (finally) be enjoyable to use on a daily basis.