I've permanently solved The Wanderer's Minuet problem...

[Reynhart]

Option B: Change BRD gameplay at the base, reducing mobility by giving cast times to some abilities, retune or redesign the procs to work with the new gameplay

Since the casting times is what most people complains about, I don't see how it's a solution. Besides, BRD have so few GCD in its "rotation", what would be some abilities ?

And at that point it becomes having an extra button to push for its own sake, which is bad design.

It's not bad design, it's "not holding your hand".
So basically, you'd like a buff to BRD that improves your DPS when you stand still without any input from you, and that automatically cancels itself if you move ?

I also like my PLD to turn automatically to block an attack so that I don't have to care about my facing...

So.. Why they decided to add casting times to WM and not taking any other possible approach?

Because I'm pretty sure that whatever downside they put, people would still complain about it. And that pretty much everything comes with a downside, it's what makes your decisions matter.

And I usually don't know that I have to move, because it seems that SE started to love random-target aoe's in 3.x, so you never know. (a3s start for example. sometimes I don't have to move at all, sometimes I have to make a quarter of circle around a boss then move back before 2-nd attack).

Random target AoE had always been a thing. But the moment where thos AoE comes is always the same.

I start next gcd cast after I moved. You can't start next heavy shot while still moving in repelling shot because of animation lock

You can start a GCD before the very end of the oGCD animation (That's why I never finish the cool animation of Reprisal with my DRK).

Maybe this. So what then? Turn it off, then wait? Doesn't look like smooth gameplay to me.

It's not that big of a deal. It will only make one more GCD under the effect of Minuet, which shouldn't be a problem unless you cancel just before an AoE appear on you (See my 1st point for that)