Remaking the remake

Let’s make a quick (but far from exhaustive) list of upcoming planned remakes:

– Footloose with Efron.

– Bienvenue chez les Chtis (aka The Sticks).
Do I need to remind people that the story was very local-based?

– A 1963 Akira Kurosawa classic (High and Low), by David Mamet and directed by Mike Nichols.

– A remake of another Kurosowa remake (yes you read that right), The Seven Samurai by the Weinstein Co.

– A Hellraiser “relaunch”, by Pascal Laugier.

and

– Melrose Place, the spin-off of BH 90210.
Will the new version be considered a spin-off of the new 90210 or a spin-off of the old 90210? Or a spin-off of the spin-off of another show?
I’m confused.