There's a LOT you can do with scale shapes besides just going up and down one note at a time.
Most of the music you listen to can fit into scale shapes. Knowing your scales can allow you tons of musical ideas.
Turns out that John Petrucci and I use scale shapes in a similar way to create riffs.
Check out this video where Petrucci demonstrates this approach to song/riff writing:
HEY!!! Does Your Rhythm SUCK!?