That was my general take. Something like an explanation for the Bermuda Triangle, etc - "this is where all those missing ships and planes over the years end up." Another weird thought I was spitballing back when it ended: what if they hadn't gone back in time, but to a very distant future in which civilization had disappeared, and large animals began to emerge again. Of course, the wood from the ship wouldn't make sense in that theory.

I'm definitely with you on your thoughts though. I just really wish they'd been given a chance to really flesh it out.