So far some of these guys are way more fanatic then i am.. one of them ranked 177 this arena, and also top 400 previous one. SA score is already well over 650k.
AQ
We are in veteran difficulty and running map 4. No 4*'s as rank rewards but T4's, also very nice of-course. The bosses are quit hard, especially Ultron with heal block, but very doable with the group. Participation is very high, the first group was finished with over 10 hours remaining, and map 4 has a lot of nodes..
Paths (they call them lines) are numbered, map 4 has 9 paths , so numbering makes sense. After the 2nd mini boss you have to call out which path you will take, or the group leader will call one for you if you've been waiting. Participation is key here, 9 paths and 10 players, only 1 gets lucky
Communication
We use Line App with different groups, 1 main chat and 1 chat for each BG and 1 for officers. It has it advantages with a long chat history and messages popup during the game so no excuses that you didn't see it.