Hell yeah! Wasn't expecting to hear anything so soon. Great news. Of course, that doesn't in anyway mean the next movie will be good at all...
I'm all for finishing David's trilogy. If nothing else, because we've gotten this far already. Just finish it off. No more cliffhangers. Get a great writer and someone who'll keep Ridley's wild ideas in check. Somebody who can tell him no. And you have the chance to finish off David in a satisfying way. Just please, a good writer, please... A lower budget might force Scott to shoot things more creatively because I doubt he can pull of a War of the Worlds scenario well enough. Keep it creepy, dark, intimate and compelling.
A movie unrelated to the prequels would be awesome as well. Though honestly I mostly want a new TV series. That would be gold. A chance at that might be what's needed for the franchise. But I won't object to a new movie if it's done well.
And yeah, predator might have to take it slow for a bit. Too bad, I don't think new movies, especially the other media should be affected because of a bad movie, but it will bounce back. There's so much potential within predator lore.