One thing that I really think a lot of SE teams should do is to include a full time BA with them, to fend off irrelevant requirements, mine real requirements and write requirement docs on Confluence. I'm currently in that position, but sadly I'm in a business team, not in SE team, which makes my work only half relevant.

The perfect BA should be someone directly from a SE team but with more people skills and are willing to take the burden of that position. He should be expected to increase the efficiency of the WHOLE team by say 20%.