It's not a story that I have studied with commentaries so I found your take very interesting. Not to mention that I don't think I recall hearing the name Mishael in any lectures or articles, so I wonder what name we call him by in usual parlance. Though I do recall hearing many times of Hananiah and Azariah, so I'm guessing it's by the Hebrew name for Mishael too. (I'm so bad with names, and there are a lot of names!) If I can remember and don't get too sidetracked, I'll ask someone...
It's great cause I'm sure your question/observation/conclusion comes up somewhere... (I love it when the question I ask today was posed in a far superior way by a far superior Sage, but 500 or 2000 years ago, and I get a real talking to!)
Yw, but thanks also for the good thoughts!