Meh prize imho. Even if I'd be competing for a domestication pen XDDD I'm not in such a need for supplies. BPs were a lot more tasty.
I also wonder if you can attack a player who has not yet researched military tactics. Someone tested and succeed, and unless that was a bug, this SUCKS big time. Imagine a new BA player came into a hood with say me who has lots of units and rogues to boot, and repeatedly gets plundered without an ability to even fight back until well into tech tree (2 weks estimated)!
I'm sure I was plundered before I ever had my first soldier. Battling foes off with spearmen, oh yeah. Isn't like a had a ton of loot to be plundered that early on. And if you are getting plundered in early Iron or sooner by someone using 7 rogues, well, being able to attack back isn't likely to be productive in the slightest.
But I can't say it's anything I was consciously aware of at the time, so memory could be fuzzy. Ah, looks like this was a new add (knew I didn't really remember it). Seems I suddenly have a giant lock on my assign defenders button in my newest world. That lock wasn't even there like 2 hours ago.
As for the premium production building, I won one of those. Not particularly exciting as you say. I do wonder what the rules for request actually are for that one though. I mean, another cider mill (let alone bountiful), now that would be nice. Or maybe a terrace farm or something. If it's actually limited to the diamond purchaseables in the buildings menu, not quite so special.