Stop rolling your eyes at France, I feel like you're rolling your eyes at me
What is MM tourneys by the way, I don't know this name ?
Even if we had good grasscourts, indoors would still be the most logical choice to me : remember Jo winning Bercy, Gaël making semis, Gilles' great run in Madrid, Richard is doing well on it too... and Rafa still won Wimbledon ! If Rafa wasn't there it would be a bit different, since Ferrer is great indoors, but we know Rafa will always play DC if he's fit as he's as crazy about it as Jo. I'm less sure about Verdasco, he missed a few of the ties and he's won the cup once already, so the novelty attract isn't there.
Anyway I think they will prefer to play on a surface where they're strong and the others are too than on one where nobody can play well (except Richard and Rafa
plus if you don't want Richard to play DC, better not to choose grass !)
There is another problem : can they play indoors in the middle of July ? It will be so damn hot.
Anyway let's not sell the bear's skin before having killed it, it's not yet done for Spain, Wawrinka seems to be on fire.