I don't want to speak for them, but I'll try anyway.
1) I'm not sure Stan caps F1 anymore. I know he's very active in Golf handicapping, and I'm guessing that eats up most of his time.
2) The new F1 rules make it a very tricky cap, particularly the qualifying. The fuel load rules mean that it's hard to gauge whether a team will be shooting for a quick Qualifying lap or fewer pit stops in the race. Results of the first two races indicate more parity/unpredictability than before. This is notable for a sport that had been very top-heavy in recent years.
3) That said, maybe 1837 will have some plays for the Race, not sure.
I'll throw my two cents out there for this week's race: Baricello may be a little overrated, despite being on the Pole. He has failed to complete each of the Last 8 Brazilian Grand Prixs, which leads me to believe he may be tight during this race, since he's running in front of the home folks.
GL.