I'd leave that up for the DM of course :) And yes, one could omit the safeties such as being usable only outdoors and not being able to enclose things in rock-strong cloud. Then they become dangerous indeed.
Great article. I also like the idea of treating Mind Control as basically a form of illusion. It has the disadvantage of requiring notes/private chats/etc to implement fully though.
Willingly playing out the effects of mind-control should provide some form of reward to the player, even in the case it leads to their character's demise. Perhaps some form of boon on their next character.