Not sure I agree - in a way you are devaluing the competition... first time we won it under Martin O'Neil we'd knocked the then domestically dominant United out in the Q/F ... that's far sweeter than winning a competition because the biggest and best teams aren't in it ... would also cite Birmingham winning it against Arsenal ... would it be the quite the same feeling if they'd plated the highest ranked PL team in the final and it was Brentford or Bournemouth?...
... but I get your drift...
I take your point but I really don't think it'd matter that much. Every smaller club dreams of winning at Wembley and who they beat in that final is secondary imo.
The flip side is would you be more excited by a Leicester v Saints QF if you knew the best teams remaining were Newcastle and Brighton and they were playing each other? Or would you be more excited if you knew the winner likely faces a two legged tie against a City/Arsenal/Liverpool?
Think people would prefer that to watching their second string away at a championship clubs second string Infront of a 4 figure crowd.
When Pompey won the FA Cup they played a championship club in both the semi and the final. Doubt they're arsed in the slightest.