Fairly inactive on EU I am afraid.. about a handful of active players and a bit more got something going lately though.. I regret I haven't been able to support it so much as I wanted as I am too busy IRL.
For us it is fairy active, we at least get 1 pop per week and some areas, good people in the bracket also. For overpowered brackets theres really isnt any that stick out. But prot warriors can hit pretty hard. Though they are being nerfed in 5.3 so its your choice in what you want to make in the end matey.