Im not the biggest fan of AnswerHub but I do agree with everyone that the collaboration is an important part of resolving issues. With that said why not have a stream on how to report bugs and give people who arnt at Epic the required vocabulary to communicate more effectively. That seems to be the biggest hurdle is Epic seems reluctant to trust the community and some Q/A staff are less experienced with the engine than community leaders, it could even be a to employ some of these experienced UE4 users from the community who already have a rapport with us.
I appreciate the move to try and refine the process and make it more cost effective for everyone, overall though Epic need to show people that correctly reporting a bug is worthwhile by not treating the community like minions, Ive seen some pretty poor attitudes towards people who are taking their own time out to try to help Epic. On the flip side Ive seen some really poor attitude from the community but those people are weeded out quickly and not taken seriously by the community or Epic so I dont see this as problematic.
My solution would be making badges worth something and trusting some community members (as they are with forum moderation) to do official bug reports, to act as technical community leaders who can be a go to for people wanting to make serious requests and/or bug reports. Even if these people were Epic employees but on a whole I dont see much socialising and team building from Epic in the community and thats what it takes to build trust, its entirely possible that Epic employees are incognito but that doesnt really help. I would just like to see less barriers and more sharing of not just knowledge but intellect 
I believe thats the best way to bolster not only bug reports but the community and UE longer term.