PicMas,
Sorry for my reply this late.
Frankly, I was hoping someone else can reply first.
I'm actually a radar controller, not a pilot.
From my experience(it's about 20 years), no pilot will take a turn in the hold in the scenerio of my example. (The intercept angle is no doubt more than 130 degrees.)
In all these years, Just recently, only one pilot did question me about whether he should take a turn in the hold since the intercept angle was over 30 degrees. Since I did not know the correct answer, so I revectored him to final approach course, to escape his question.
I think you are probably right. But I'm still wondering why only one pilot ever questioned me about it, and all other pilots didn't hesitate to proceed ILS approach after passing IAF.
Thanks for your reply.