So with that last bit in mind, the rumors are that this may not actually be a sequel, but an entire reboot of the franchise.
Why a reboot? The first film came out in 1994. That is literally 20 years ago. When you consider that time frame, the age of the original actors, and the fact that the original film is forgotten next to the juggernaut that is the television series, it makes a LOT of sense to reboot. Not only can Emmerich get the franchise back into the minds of moviegoers, but with the fact that we haven't had a new Stargate series on television since SG-U in May 9th, 2011. That is now 3 years ago. It is time for Stargate to come back.
However, one fear that some fans may take into consideration is whether or not Emmerich will turn Stargate into a "destroy the Earth" movie. His plans for the Independence Day sequel will certainly be a "destroy the Earth" type film, but let us hope that Stargate doesn't end up that way.