I've changed pickup couse:
1. There were many opinions on this forum that stock pickups are cheap (at least in '69 reissue).
2. Distortion with stock bridge pickup was horrible.
3. Clean with stock bridge pickup was so-so (same as now with dimarzio fast track 2).
And one more:
Cobain had changed pickups and still had great tone.
I do love mustang sound, but mine seems really not something I'm looking for. It' s huge problem for me since in East Europe is impossible to get this guitar. Anyway I'm thinking about '65 reissue , couse it looks like it is more twang. Or maybe I'll give myself another chance and change the pots - I heard that it is almost obligatory when you put humb/mini humb. What do you think, guys?