I don't know, I think it's pretty easy to ask questions for this during an interview process even if you have those "champions". Just ask "what are the current

I don't know, I think it's pretty easy to ask questions for this during an interview process even if you have those "champions". Just ask "what are the current pain points and things that can be improved about the company?" If they give an honest answer then take it at face value. If they just bullshit you by talking around the question or flipping the question and talking about a "good problem to have" then you probably don't want to work there.