To be able to see what goes on in my team, I'd prefer the teams pull request page to have a filter so it only shows PR's for one specific team, instead of for all teams.
Now I can only see open PR's for me, i'm watching and for all my teams combined. The last one is pretty useless IMO.
What I'd propose is a filter on the teams PR page on the general dashboard.
AND also a Pull requests tab on the teams and project pages.