ATi

I don't know who the thread opener is ingame and what is your - obvious - personal beef you have with him. And it also has nothing to do with the matter in my opinion. The main point of the thread was and is in my opinion: "Don't force us here too much, because it's no fun" - and I still hold this opinion.

Your argument that the TO has probably farmed his high rank in BH is unfortunately off-topic, as it doesn't really get to the heart of the problem. At some point, every casual would come to the point where he has to play maps that he can't manage on his own or that he doesn't feel like playing. And I can think of a dozen other reasons off the top of my head why you might want to bypass a certain campaign map, and each one could/should be respected, even if it might not affect you or you have a different take on it. And "fun" is absolutely the focus here for me, and even though we're all playing the same game, it also shows time and time again that we all have fun doing different things in this game.
That you, as a member of the best PvE team that runs around out there by far, then give to the best that one can manage every Expert alone is just impudent elitism - someone has probably completely forgotten where he comes from. Sorry, but really try to take the position of family father with 2-3 playing hours per week and not the time and attitude to read forums, watching replays, youtube... There are many people around that do not even care a bit about that little timer up there or doing things that several players are supposed to do.
But lets just speak just for myself here:
Personally, I'm probably at the lower end of the top percent of Battleground players currently - but I have NO idea about Expert maps and will not start to get any knowlege there anymore. I am someone who has to do one thing 3-5 times before I can do it - and repeat it regularly so I can remember it. Honestly, the strategies that your team has all there, would be a full-time job for me to remember it all.
Plus - and this is even more important - I just don't enjoy it! And this "there are always people in Discord" doesn't help either, you have to find the players you have fun with first. When I did expert maps with more experienced players - like you (thanks again!) - for example for the achievement, it was pure stress for me. Everyone knows what's going on, except me, yeah, that made me feeling great. Pings everywhere, a thousand explanations (usually so brief that only the insider understands), Moon yakking at a stretch, but who is she talking about... or catch a group of people who are even more clueless and you fail without a chance--- yay, campaign rocks...not (for me).
By the way, I think the TO is very right when he states that in the vast majority of games, daily quests are less of a "challenge" than an "occupation". I don't think it's a bad thing that there's a "Do map XY" quest, because every once in a while I feel nudged to take a map with me - but please don't make me do it. And by the way, sometimes I did it on expert though my quest was only for advanced. But hey - this was MY choice, and then I have fun.
Oh and by the way, the TO has also at NO point said that the quests would be unmanageable for him, he said that they are annoying. Here you can see at the latest that it is probably something personal for you.
And as a really last thought just: As much as I laugh at the BH farmers, and by God how I laugh at these Lappen, it is quite arrogant to assume that these players all per se can not play. Unless you take the squad you're traveling with as a benchmark, but then I guess we're all unworthy....
What speaks against constant rerolling (still only one per day if you want, maybe of course with another -5 bfp if that is needed balancing wise)? I see no reasons. In fact quite the opposite, most games I know of that had similar systems had no such restrictions.