If there was a dislike button I'd be mashing it for some of the takes in this thread. We've already hashed this out and I've previously staked my position of being in favor of this.
I strongly disagree with those predicting this to have a negative outcome. There is no sibling rivalry going on here, the pecking order was established by external evaluating factors. The Mobley family is apparently a very strong, well functioning unit based on what info is available. You know there have been conversations to feel this thing out. Q-Tip stated it well, this in not an experiment, it's a known quantity. Yes this is an intended concession to the whole family and tell me on what planet is that a bad thing if it can be justified for basketball reasons as well?
Isaiah is a 6'10" player who has competed at a very high level, who has skills. If he replaced Ed Davis on the roster for the next decade with playing time varying according to need and fit, who is going to say the young man can't help towards winning games? I can make plenty of arguments supporting this move that trump arguments against it.