I did succumb to using devcommands, but to actually trigger army_seekers to see if my Meadows base was completely useless. Yes and no. A seeker was able to fly up into my compound and attack me but was easy to fend off with normal padded armor and black metal set - typically events use a nerfed variant of the creature. The soldier did not fly and was just shrieking in my moat but destroying my stone staircase. Just stood up on my wall and peppered it with wood arrows from Drauger Fang - but in its hind quarters as suggested by Mistlands veterans. About 40 arrows later and I got the mandibles, carapace and soldier trophy. Nice! So all is not hopeless but you do need to carry out your normal activities ready for anything. No more lounging about the Meadows base in Fenris armor.