Yeah, but "Foro Sol" it's got more a stadium feel, and GNR only plays arenas here in Mexico, and (as a personal opinion) the promoters would need like a festival or something,, like that thing that happen in 02 or 03 (can't remember) when mudvayne-->Manson-->Korn played at Foro Sol.
Im not saying GNR wouldnt be able to sell out that venue, of course it would sell out, but I think it's gotta be more a management thing than the band itself.
Just look at the Guadalajara confusion for the past 2 weeks, it ended up being at the same venue as 07. I bet the promoters did a really good job booking the VFG arena since the 07 incident (the venue was fined for the mini riots inside it), and the positive thing is that no matter what, GNR or its management, (this is my assumption) did everything within their power to bring GNR back to Guadalajara no matter the cost, venue, etc.
The new "Arena Ciudad de M?xico" would have been a perfect venue but I believe it's not finished.
I've been hearing some rumors/comments about Rock in Rio being organized in mexico in the future years and that would be a perfect oportunity to have GNR as a headliner playing in that venue "Foro Sol" (If it ever happens).
(For those of you wondering, FORO SOL, is the venue where Metallica recorded this:
http://www.amazon.com/Orgullo-Pasion-Gloria-Noches-Blu-ray/dp/B00315RRD4)