The problem you have with that list is firstly none have a premiership and secondly they might be available but do they want the poisoned chalice of coaching a train wreck of a club that if you have your way would sack a coach after 18 months. Just remember neither Fitzgibbon nor Ryles wanted anything to do with us as they knew that it could be the ruin of them.
The majority of coaches don't have a premiership to their name, doesn't make them a bad coach or a worse coach than Flanagan.
Some of the best coaches in the game are still unknown quantities and we won't know until they're actually given a chance.
I don't think the dogs would regret taking a punt on Ciraldo, the warriors on Webster and the Sharks on Fitzy.
Ryles will earn his stripes in the coming seasons as well IMO.
There's no reason why we can't identify our next head coach and head hunt them and work with them to give them the structure/support they need to be successful along with the team. Just because Fitzy and Ryles said no, doesn't mean it isn't worth trying with other up and coming coaches.
The facts of the matter speak for themselves, Flanagan has less than a 50% win record at the dragons. This year thus far the team is looking in worse shape than it did last year.
Flanagan had a stint as an assistant coach/list manager here during the Mary years and obviously didn't have an impact then and at this time, clearly isn't having the impact he should as head coach.
Flanagan's predecessor was given 18-24 months, so the same standard should apply to Flanagan. It's a fair amount of time to have put your stamp on the team, cleaned out the roster/recruited/retained etc. Remember Flanagan only has a 3 year deal, so he would know the drums are starting to beat louder and that's fair enough, he has been given a good amount of time to fix things and so far we're seeing little reward for his efforts.
Would you and others prefers the Mary approach and give Flanagan 5-6 seasons of excuses before we finally pull the pin on the mediocrity?
2-3 seasons is plenty of time and I would also remind that you no one on the forum suggested Flanagan needed more time than this from the beginning, nor should they now.