Bibi might use this as cover to just fully go in and settle all of West Bank/Gaza Strip. Probably not, regardless though, this will happened eventually. Only questions are when, and will it be a rapid swipe or the continuation of settlements until there is no more room to take.
Bibi doesn't want Gaza. There's no good place to put a settlement there unless it were cleansed of its current inhabitants and no one with even a shred of sanity thinks that'll ever happen. Nor will this have any effect on the West Bank. If Bibi decides to expend there, he won't bother with an excuse.