Same. I'm a draw away from completing the Sir Alex Ferguson challenge with Norwich six seasons early. I might take on another club for a season just to see if I can replicate the wall-to-wall success I've had (15 consecutive Premier League champions) before taking on a different challenge. Tweaking the data to replicate real life more accurately might make for a fresh save but the occasional successes of players like Connor Wickham or Dale Jennings whilst Harry Kane becomes a decent Championship player who never quite performs in the top division are fun too.
I've got a long term San Marino challenge game going that's just never quite translated into a successful national side. My club team are consistent title contenders but I just don't have enough quality Sammarinese players coming through the ranks to challenge for the first team, outside of a right back and a couple of 2nd/3rd choice club keepers. The other long term options are the British Steel challenge, which I've never gotten further into than doing most of the Northern Ireland trophies, and the Pentagon, which I have an unlikely MP Black Aces in the African Champions League but performing awfully in the league after a shock title win, and all of my half decent players planning on leaving at the end of the season.