I think the problem with getting bored was the repetitive limitation the mode had back then. I don't think they did a good job in capturing the "fun" in building your athlete or the importance of fitting into a system while playing.
As far as having a billboard, shoe endorsements, etc. How is that any different from what the vast number of highly rated rookies experience? Sure some of the accolades came far too easily and quickly, but the concept is right on par with being a high draft pick.