Ages ago I tried to get this working also… specifically I was trying to get large carnivores to attack rafts as it annoyed me having a dude on a little boat floating next to T-rex in a shallow river and the rex doing nothing.
When I looked at it, I determined that the problem was hard-coded and hidden. I supposed from a performance perspective you have to be really careful about how many objects are scanned for target suitability… and adding non-Character BPs could be really bad. Imagine a Trike wandering into a player area and there are a couple of hundred thatch bits to scan through and determine distance from.
Now imagine EVERY Trike scanning EVERY thatch bit with UNLIMITED distance… including areas that are in stasis!
Remember that example mod the devs made where the player is in the arena and has to survive waves of attacks? Might be worth poking through that… but I suspect the way they did it was to make the area very small and make the aggro range of dinos big enough to scan… but again only player character BPs.
Anyway… I suspect you might need to look at custom blueprint scripting… maybe every 10 seconds run the event. Maybe you’ll need to spawn an item that specifically never goes into stasis as well so that it can be actually found.
Cool idea though… maybe if you’re struggling or worried about performance issues… just try spawning in a single dino class (“Rogue T-rex”) that only aggros players, has unlimited aggro range… see how it goes.
Of course it’ll probably get stuck on a small rock and never get there… but that’s another story