Penning, Davenport, Turner, Ruiz (took 3 years to be descent but not great), Foskey (got more from Granderson as a UDFA rookie than him). That's not a good hit rate. You could make the argument that with the exception of Ruiz, that if any of those picks played like you would expect for a high round draft pick, that the Saint might still be in the playoffs even if everything else was the same.
Ireland is definitely not terrible. But the scouting over the last several years has definitely held this team back and will continue to do so till it gets better, no matter who the HC is.