I think one of the biggest advantages to playing electrics is that they allow you to wander up the neck without hurting your arms too much.

This allows for:

1) Different chord voicing and leaving strings open to act as drones. Example: try playing an "A" shaped bar chords at the 7th fret (where you are actually playing the chord E) and whilst doing this try leaving the e sting open.

2) Experiment with things like inverted chords.

3) Playing pentatonic scales and blues scales. These will offer a quantum leap in your playing. The can be found all over this site and they are very cool !

You can also experiment with tone i.e. reverb and delay, different woods or pickups, amps (or emulators), different types of distortion, the list goes on and on !

Best of luck