I'm not sure at all that Senna could provide the leadership the team needs. Being fast over a few laps is one thing, being the figurehead of a 400 person workforce is quite another. Bruno just comes across as a bit too... wet. I'm pretty sure that if he didn't have the name and yellow helmet he wouldn't be anywhere near an F1 car. He might be fast enough, but things have come too easily for him to have the sort of ambition that a top performer needs.
Unfortunately, I never got that sense from Nick H. either. Back in the BMW days it was always Kubica that was keeping the team on its toes and questioning daft decisions, while Nick always seemed to meekly accept the status quo. It says something about the other "top" racing series around the world that nobody has seriously spoken of anyone other than the usual suspects. Whither Dario? I know that he's knocking on a little, but to have a twice Indy 500 winner and three-times series champion with a strong road racing background not even be mentioned... And as for the ALMS, DTM and WTCC, why not?
I suppose what I'm saying is that I doubt LRGP's ambition. Their car could be the class of the field this year, but if the meatsack behind the wheel isn't right then they will have wasted their chance. They have a potentially race-winning car as bait, so why aren't they fishing?