While it's always fun to speculate, I think the lack of announcements is giving this year a chaotic 2020 feel again, where we were pulling things out of thin air and putting wishes before sensible ideas. Universal is probably eating this craziness up, as it drives more intrigue for the event. Also, I know the spec map makers post this each time they release it, but I feel like I have to emphasize it here:
The spec maps are not fact.
This event is an organic amoeba that's constantly evolving and changing as months go along. If there's a "secret IP," it's secret for a reason, so throwing stuff at the wall to see what sticks, isn't helpful. I know I sound like a "get-off-my-lawn" old person, but this is guidance that I believe will make us all better.
I appreciate the excitement, but I'm advising all of this so that people don't ride this emotional roller coaster only to be disappointed in the end.
I hope this makes sense and that I don't sound like a downer.