Okay, here me out.......
I agree with anyone who says EA should be able to produce a game that has everything spot on for career mode, but this never happens. Bottom line, EA is a company, and their aim is to make money. Clearly the majority of their focus goes on Ultimate Team and human v human play for online games. That's where the biggest market is and most money to be made is.
So what about this. A DLC that upgraded career mode. A more in depth version of career mode that improved it at every level and removed all the rubbish that prevents it being the great mode it could be.
This would mean that those who aren't bothered about career mode don't have to pay a higher price for a version they wouldn't want to use, whilst those who enjoy career mode the most get a much improved version of a game mode they enjoy for a fee.
I'm talking things like extra leagues maybe, the addition of some club records being implemented, improved youth academy and scouting, more clear variation in how the AI teams play. I know many would maybe disagree, but I think a promise of a bit of extra revenue would help maybe shift some more focus on to career mode, maybe employing extra staff to get that stuff right.
I'd much rather pay extra for a much improved game version than have a game costing me £50 gathering dust on a shelf or not being used to its full potential.