Well, they've set up that the park will be history by the following morning, and that the genetic experiments have been smuggled out. So I'd be surprised if they set another film on those islands, and I think I heard Colin Trevorrow mention on a podcast that he envisioned future stories taking place "on the mainland". Which mainland I'm not sure - given that the production has absolutely 0 connections to Costa Rica, and Michael Crichton's completely out of the picture now (whether directly or through legacy), there's no reason to think it'd be the nearest coast.
The most obvious angle to take would be a continuation of the military stuff, but the Hoskins character wasn't particularly well-received, so who knows.