Apologies for the epic late reply - I wish the forum software automatically subscribed you by email to threads you post in. 
RE: making a pull request, I haven’t done yet as there are a few dependencies with other local C++ changes we’ve made so it would be a bit of an effort to clean it up and get it into mainline. Unfortunately I’ve got a pretty tight schedule for Space Dust Racers so I probably won’t have time to do any time soon. Anyone is welcome to grab the code snapshot I posted above and push it through of course - I imagine if someone from the Epic team had a look, they’d probably have their own ideas about ways the tool could be improved. My implementation is very “road”-centric.