As for Silva, it depends on his ambitions. His end game maybe a role at one of the elite European clubs in the next 12-18 months. To get this he needs to decide if his stock will be better served at Watford where there will be less expectations but a top 10 position will still get him noticed or Everton where there is a higher chance of failing
As for managers:
Dyche - should have been given a chance but often a new owner starts afresh
Zola - Great football to start with but seriously lost his way and conceded too many (same as at Brum)
Sannino - was only ever to be a short term appointment to steady the ship
García - left after four games on health reasons - think he had a heart attack
McKinley - totally wrong appointment and left after 2 games
Jokanovic - Great manager and wish he’d been given a chance in the Prem but, reportedly, wanted too much money. Maybe, based on Fulham, the Pozzos were right
Flores - read Zola
Mazzarri - horrible, horrible football. The second half of last season was dreadful to watch
Silva knew what he was coming into and has done a great job. Time will tell if this is a power play for him to get more control at Watford or Everton is the step up he’s looking for
So these are the managers you've had in the last 6 weeks, who did you have for the 6 weeks before then?
In all seriousness, are they your managers from last 4/5 seasons?