I think any California Power Alliance would have to include 254 and 1538. Amazing ground pickups, high potential for a 90 point autonomous and amazing scoring/climbing machines. The third bot would really have to depend on what the alliance is going for. I think both 254 and 1538 would appreciate a robot that can feed discs from the HP station a la 118 at SVR, but said robot also needs to be able to score and climb by itself as well. For this reason, I think 2485 with their full-court-shooting potential as well as large potential to feed its alliance partners would be ideal for this West Coast Wonder of an alliance.

In summary:

254 - Ground pickup/90 point auton, Strong scoring, 30 point climb
1538 - Ground pickup/90 point auton, strong scoring, 10 point climb
2485 - Strong feeding ability, Full-Court-Shooting, 10 point climb

A strong secondary candidate for this alliance would have to be either 1717 or 973, which are both strong scorers, but do not have the capabilities to feed 254/1538 from their scoring position, a skill that makes 2485 special.