I am hitting haunting and upgraded three of my SOS to Volarys. My ally bonus went up roughly 100k per troop attack, and I am doing slightly more damage per unload.
The balanced tier 5 building is boss. I got like 300,000 extra plunder bonus i think it may have been even 500,000
Volary hasn't affected plunder much at all for me. If anything, it added to it slightly. Not switched the attack building out yet, but will wait and see.
My guess is the best thing to do is upgrade all the lowlands to t4 before you start building t5 on the highlands. I'm going to stay a guild hansel for now. Might be tempted into upgrading once you can upgrade it to lvl 2.
I just full converted my highlands to t5 spies Uh-oh. I'll post my wall in a second and let y'all know if my plunder went up or down. Lemme find an unsuspecting hansel real fast
Your plunder should go up unless you are hitting a small eb. Think plunder only goes down for guild hansels.