I have been asking for it for years. And I am not suggesting that dynasty mode for a "single season guy" is a game breaker, but it is a nuisance. Waiting for the game to sim, sifting through recruiting menus is annoying. I realize it doesn't bother you, but would you feel differently if between each week of your dynasty the game made you wait 60 seconds while it updated Mascot Mode rankings?
And I am not sure why people think this would take up space? It is simply Dynasty with a couple lines of code like "If Mode = Single season, then Skip Recruiting" and maybe hide a few menu options.
I do agree that season mode is not worthy to be marketed as a mode. I do think it is something else. But I am still hoping for a basic, run of the mill, good old fashioned season mode.