Hopefully theyll have ironed out the crapness by Goonies V: Goonie Harder
I'm guessing they'll just go 3 then shift to prequels, like the 1st chapter, Goonies: The Fratelli Menace.
Then once those are played out, they can do a spin-off pre-prequel on One Eyed Willie... so long as they don't release those too close to the release dates of Pirates of the Carribean 17, 18, and & 19.