For the circle running thing, I thought about something. I am playing a lot of Guild wars 2 lately and I think that we could inspire from it's commander system. Basically, some people on the map can activate a special tag and lead the different event, battle in World vs World, etc.
I don't know if it is possible but we could put a small banner or something like this over the head of a "commander" that would "lead" his team. He would not give orders but just let people follow him and make the fight happen faster.
We used to ask people to follow us with some unity to rush directly in the middle on sandi or reveran. Usually it ended up with the majority of our team following us into big melee fights which are funnier than what we are used to on the server.
We would just need people to apply for this role and be prepared to tag in when it's needed.
Sorry for my poor english.