I know what u mean
Everyone goes through it
Just save until u think u gotta shot
I personally don't like the cup
This only furthers the gap and widens competitiveness between top division and low division teams
It's like oh let's throw extra 50k to the better teams
Much better if it's a league game instead
Of course, there's also the counterpoint where teams in IV and V often gleefully will play their starters 40+ minutes in both league games and then just as gleefully play the starters again, burn enthusiasm with a CT, and quite possibly take you down. Heck, teams in upper levels will sometimes CT to stay in the Cup. I can't see doing that myself until you get to the rounds where it's playoff enthusiasm rules, which is probably related to why I've never come close to those rounds. ;)
It is nice to have the extra competitive game and an extra chance to boost enthusiasm though. My bigger problem with it is that losing in the Cup early can really dick over your fan survey for a while, and with the draw being random and the fans apparently not knowing or caring about whether you lost because you fielded scrubs or because you played the #2 team in the country doesn't work well.