Would soccer enjoy a soccer game if it was 4 quarters of 20 minutes each quarter?

No. We don't want our football turning into a circus like American football.

Real (and even most casual) soccer fans I know would hate that.  The flow of the game is extremely important including the fitness needed.  Resting and huddling with the coaches for strategy and instruction take too much out of the players' hands.  

The only people that would like it are short attention span individuals who like baseball and advertisers.  

No.  Why?  It breaks the flow of the game.  In American football it’s normal, a totally different concept, whereby it’s a series of set pieces that make up a whole game.  

 In “soccer” it’s much more in the moment.  There are obviously tactics strategy and practiced set pieces but the game evolves organically.  Believe me, there’s no shortage of analysis, which involves a litany of single syllable choice Anglo Saxon words.

No way; they have tampered with the rules too much, recently....

Advertisers would like it more, especially if you could throw in a bunch of time-outs.  Fans of continuous games like soccer (football) wouldn't be much impressed though.  That's how the Americans ruined basketball, they took a fast free flowing game and chopped it up into tiny bits in order to sell more Cheetos and Big Macs.