For the wiring, he likes having a lot of control on the guitar, so I'm thinking of replacing the Tone with a Treble/Bass cut stacked pot and adding a cap to the volume. For the switch, probably a 4-way, for: bridge, B+N series, B+N parallel, neck.
Tone wise, he's into classic rock and blues. He's currently running into his 1967 Fender Super Reverb, but wants to change that up with something with a master volume, but that's another thread
Any recommendations from Tele players?
Edit: Pics added.