Look to make a psychological test since you are not a follower of Ajax .. if i mention the word Ajax and tell u to say 10 things about them off the top of your head football wise you will mention some stuff that happened in Different generation
u would probably say Cruyff,Rinus Micheles, Van Basten , De Boer brothers ..etc
u covered different generations
now if i mention depor or Leeds most of the time u won't even remember 5-6 things about them needless to mention u won't be able remember anything about Depor before the late 90's and just the current good players like Guardado or Valeron
it's usually tied down to one generation or 2 ..
if a club like Real got relegated the liga will miss 1/2 of it's thrill ..same if Man United get relegated
but would the level of the liga go down if Depor or Atletico head back to second division (and they did ) ? did anyone miss Betis already ? noting Betico were 4th in the liga few years ago and gave Chelsea a good beating ..
clubs like leeds , N Forest , Citeh can and did go down and u didn't miss them .. it would be different if it's liverpool,united or Arsenal