And Poll has highlighted respect and protection for referees as a key area for improvement.
"They are certainly not protected enough," said the 46-year-old, who refereed at the 2002 and 2006 World Cups, as well as the 2000 FA Cup final and 2005 Uefa Cup final.
"The respect campaign was something that was brought in at the start of last season to help them with that. I think the focus has come off that and we're seeing more and more dissent from players on the pitch.
"An early job for Mike Riley will be to talk to the FA to really reinvigorate the Respect programme."
Poll is also of the opinion that referees need to be stronger which, he feels, is difficult given the PGMO's relationship with the Premier League.
"It's strength that's required from referees. That's what gets respect - strength - and we're not seeing referees being strong enough," added Poll.
"One of the reasons for that is that Mike Riley reports into a board which is basically run by the Premier League. So it's the clubs themselves who are dictating policy as opposed to the laws of the game."
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