For the record, I also never liked the style in PSR-2, mostly for the curly-braces-new-line syntax. It feels a bit like agreeing on using C++ coding guidelines for Ruby projects, but well …
I voted in favour of the change because it lowers the barrier for new contributors. I was reluctant, because it will be a hassle for existing users of Flow and Neos who will have to convert their code and probably even automatic checks (code sniffer) in Jenkins etc. It’s a little hassle and no real problem, so I think we can do it.