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

[vp_cmc]

If you know you have to move...

So.. Why they decided to add casting times to WM and not taking any other possible approach? Causing those 1-4 issues?
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).

There's almost one second left on you GCD...

Try this yourself.. Cast heavy shot under WM, catch a proc and press straight shot. Proc will not be used and cast will be not instant...

Because Repelling Shot...

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

Because you probably start your next GCD before the icon disappear...

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