Holy shit, this is the best thing I've heard. I started playing acoustic guitar because it came with my violin lessons. Much later I started learning to play it. Knew that Rocksmith was the hardcore version of Guitar Hero, but not that it involved an actual guitar with actual real fingering. That's totally different from Guitar Hero, which is just a toy, a thing that plays functionally like a diddley bow and just exists to be a casual video game representation of what it's like to be a rockstar.
But with Rocksmith, I could buy a cheap ass electrical guitar, not need the amplifier, and a $30 copy of the game and it would have tons of music (which I read can be exported to sheet music with an app) with musical accompaniment like I have for my saxophone. That is an extremely good deal.
The lack of a sheet music mode is a shame, because while a person may learn to play songs from memory there is no educational value in the GH style of presentation, no carry over to being able to read and play sheet music from it. I know sheet music but you have to more or less relearn it for each instrument (to make the instantaneous connection of a position on the staff to a specific fingering).