I would say play the way you want and how you want. This is Season One. There are a lot of issues out there. ex: matching problems, job balancing, cheating, and so on. Since PVP dev wants to bring in something new, they will have to fix them.
I have been stuck at Bronze 3, Silver 3, and Gold 4, and stop there. Currently, the matching system does not make sense to me. I found myself having more fun in Casual matches since I don't really need to care about winning or losing, so I just purely enjoy playing the job and working with the team I got there. yes, you can get all newbies on your side, or hardcore like win a game in 30 seconds. However, I found it is more fun.