Please consider limiting the number of Proxy Shield mobs that can appear in an Ultimatum

Sometimes things get really out of hand, when there are 3 or 3 Proxy Shield mobs together huddling around the pillar.

Even worse if they're joined by a Benevolent Guardian.

I'd be thrilled if we could cap Proxy Shields at 1. 2 would still be an improvement if 1 is asking too much.