Tread carefully and cover your own butt.
It's worth giving it a chance IF you're ready, but maybe your fear is wise. Maybe HE's not ready.
Only you can judge.
IDK what you mean exactly by 'making you famous' but I'd say go for it!
Take that risk.
I don't know. Why didn't he make you famous? Did you part on bad terms? Is he safe? Would need to know a lot more. I guess.
Has he ever done anything for you? If he is so powerful and so great what do you need a second opinion about?