They already have code that blocks them from all but brawls. A slight change to allow brawls and challenges should be easy.

It’s just the time and attention to make sure it doesn’t break anything that seems like it would take resources they don’t really have at the moment.

Honestly, I know why it isn’t a priority, but enhancing challenges is something that should be down the road. Practice and challenges both seem to go pretty much ignored, but both can bring a richer experience to the environment.

I’d even like to see some kind of initiative to encourage challenges among guild members. Kinda like brawls but against mates.