I don't know about Forget (he's very silent) but I'm afraid he won't take Gaël because of their shared past. I also read in a few sites that Llodra, Jo and Gilles were sure to be selected, so the 4th was going to be played between Gaël and Richard. And a few posters think the same here too... If you look just at the rankings, and at the beginning of the season, Gaël objectively should have an assured place, since he beat Rafa and retired at the AO (so no one knows until where he would have gone had he not been injured). I love Jo as much as the others, but I don't take it for granted that he should absolutely be taken over Gaël, same for Gillou. I also think that if Gaël is still French number 2 and in form when DC comes and he is not selected, it will be really unfair. I still don't get why everyone still wants Mika to be in the team btw.
I think we'll have a better sight after Rotterdam about who's in form and who's not. We still have a few weeks anyway..
I'm pretty sure Gael is the one who's the most likely to be left out, for a variety of reasons.
Llodra is almost garanteed to be in, because he is one of the best players in the world in doubles, has won grand slams in doubles, has participated in I don't know how many Davis Cup ties, etc... Forget wants at least one "experienced" player in the team, and the only other one with some experience is Gasquet, who is not certain to be picked, and who is not exactly one to bring "steadiness" to a team... Jo has the best results (when he's healthy), is a born leader, brings energy to the whole team and loves big events and playing for his country (he doesn't fold under french pressure). Plus the faster the surface the better for him and we play Czech republic at home... I think he is even more certain to play than Simon. Simon has the best ranking, is now a very "established" player in the top 10, and has shown that he is very very steady if nothing else, and can sometimes turn a match completely in his favor if things go wrong.
Those 3 players have very specific jobs and they are pretty much perfect for it. Tsonga leads the team, is the one most likely to take out the best player of the other team, and is pretty much like a giant (very muscular) cheerleader the rest of the time. Plus he can play doubles just in case. Llodra is the experienced guy and the one who's supposed to win the point for the doubles. Simon is the "go-to guy" in case things go wrong, who will 99% of the time beat the players that he's supposed to beat, and will fight to the death against the others. So that leave room for 1 other player, and one replacement. You need one other player for the doubles, and you probably want that player to be able to play a single math if need be. Clement is pretty much done in singles, and Monfils is not a very good doubles player. So Gasquet would be the logical choice, with Monfils as replacement, being competent in both singles and doubles and pretty experienced to boot. But I could see Monfils as the number 4 guy and Gasquet as replacement, since Gasquet is not very consistent (Monfils is getting better).
edit : as I finish writing my little novel, I notice that Llodra/Clement are destroying Nadal in doubles in Rotterdam...