I want "Solid" to be done with and then see a reboot. Yeah, I want to play a new MGS and I'm sucker for Snake's rugged handsomeness (in a non-sexual way), but I don't want it anywhere near the storyline of the Solid series. In fact, seeing how Bond was partly an inspiration for the franchise, go with standalone releases every x years, with loose continuity. Fun stuff.
And while you're at it, rid the series of all the "western elements" BS that MGS4 brought along in the gameplay to appeal to westerners. Stealth > Combat. Oh and "Circle" is accept, "X" is cancel. Not the other way around. Period.