Just no former players full stop unless they have a track record somewhere else first. What evidence is there that McGuire would be a good assistant and potential future coach? He got kicked out at KR who have only got better since he left. Is he having an impact at Cas? Maybe, but again, what evidence is there that he's driving improvement there?
Danny Ward has actually done some first team coaching and didn't seem to do too bad a job with the Broncos for a while. But what has he done in the last few years? Ryan Hall has zero experience as far as I'm aware.
Knowing what went on during the Golden Generation is fast becoming as relevant as having played with Eric Harris. If anything its looking more of a negative than a positive to me. Our coaches during the Golden Generation were from outside the club, with Brian McDermott only having a short spell as assistant before taking over, but coached London before returning to coach at Leeds. Tony Smith and Bluey had zero links to the club.
Its not the be all and end all, but I hope - and seriously doubt - Blease or Arthur would care very much where someone played or coached before bringing them in. What matters is how they have performed.