I made a PR to add local vertical movement to the editor viewport camera in addition to the existing local forward/back/left/right movement. This is a really minor usability enhancement in the editor, I think it would be easy to approve if people got a chance to look at it. Maybe some people here on the forum can give it a review?
https://github.com/EpicGames/UnrealEngine/pull/10812
Thanks in advance.
Good luck. PR’s are basically a black hole. You get no feedback one way or another and they just sit there. I made a PR a year ago that adds a blueprint node for iterating TMaps (similar to ForEach for arrays). It doesn’t change any existing engine code and is just a few new files that should be trivial for them to include. Still waiting …
Had the same experience, I’ve made a very simple bug fix PR about 9 months ago - thread / PR 10862 and never got any response 
No idea who I can contact to get some response.
I’ve had multiple PRs in limbo for years, I maintain them regularly as I still use them but whatever. Their loss.
However in this particular case I’m not sure how it would end positively. Local Vertical Editor movement of the camera, isn’t that what Q & E are for? Are you sure you didn’t reproduce an existing feature?
I’ve been waiting for over a year on a pull request that adds proper dual quaternion skinning in the new deformation graph and fixes their dual quaternion math class as it has a bug. I even added unit tests for every single method in that class.
Haven’t heard a peep.