I meant like another level sorry for nil explanation I was f**ked last night lol... Okay so say for marriage you can get another level to it, same with all medals. But that last milestone is one that is much higher than the rest and it comes with an honor because its so difficult to get. Basically.
The thing is people like a sense of completion to their medal collection, and making it so the 'final' medal is overly difficult would go against that. In addition I'd argue there are alright enough hard medals and honours to get: 10,000 attacks, 10,000 defends, 10,000 drug deals (and other such crimes). Believe me these are bloody big achievements as they are, and I'm pretty sure people would rather like the chance of moving onto something else, rather than doing 50,000 GTA crimes.