Has Coletti really been driving like a champ? He's hardly been leading from the front every race. Felipe Nasr has yet to win a race this season and he's not far behind on points.
I expect better to be honest, by the time a driver is in his 3rd/4th season in a junior category, they really should be occupying the top 4 pretty regularly. Coletti has still been inconsistent and not really very convincing. I'd say Luiz Razia was more convincing and he was never really lightning quick (nor Valsecchi).
I know it's really come out of nowhere, but Coletti has been very good this year. His qualifying hasn't been stellar (though his lightning starts have made up for that somewhat), but his race pace and overtaking has been excellent. And he's been good at every event: top 6 in every race until he was taken out by Leimer on the last lap of the Silverstone feature race. He's simply been the best driver in what I rate as a better field than what Razia/Valsecchi had to deal with.
All that being said, would I put him into one of my hypothetical F1 team's cars? No. I'd go for Nasr or one of the current top 3 in FR3.5 if I had to have a rookie, else I'd go for an F1 vet and/or wait for Lello, Wehrlein, Evans, Rovera, etc. (ie next young gun) to be ready.
Yes, I would take anyone from FR3.5, what's crazy about that? I don't see why FR3.5 has such a low reputation on this forum, there have already been plenty of quality drivers to rise from F1 from there and the competition is much closer than GP2. There are far fewer multi-season drivers present as well, meaning the top drivers are not just the most experienced.
And how does that (in bold) make it a stronger series? All the experienced drivers are gone from FR3.5, so while there still may be a horde of talent in the series, there are no benchmark drivers for the young guys to stand out against. The likes of Kevin Magnussen and Stoffel Vandoorne are competing against each other, and they are very talented, but still fairly raw and unproven drivers, while Felipe Nasr is up against the experienced heavyweights of past European formula (Bird, Calado, Leimer, Frijns, Rossi, Ericsson etc.).
All that being said, and as I said before, I think there is more talent in FR3.5. But please don't tell me you'll take Carlos Huertas for your F1 team before you take Felipe Nasr.