Interesting question. My big games from 2012 were:
Chelsea - three/four seasons standard performances before becoming the richest, most successful team in the world for ten seasons.
Sunderland - Champion's League winners in 7 years.
Brighton and Hove Albion - Became the new bouncing baggies, between Premier League and Championship for several seasons, including one ill-fated Europa League campaign.
Dartford FC - Blue Square South to Premier League mid-table mediocrity in 15 years.
and one save in Brazil - Brasiliense from Campeonato Brasileiro Série C to Série A in 5 years, then Sao Paolo to Copa Libertadores glory in 2 years.
I also had a raft of unfinished games from the mid-level English Leagues. Got Shrewsbury promoted but got bored, won the Championship with Watford and ditto. I also made a start on the San Marino Challenge but didn't have enough time to really stick to it.
I think this year I'll have to start with Chelsea as always. Then I like the look of Fulham, they could be a good save. I'd also like to take a team from League 2 to European glory, Swindon and Gillingham both have good support and youth academies so they could be a good shout.
In terms of challenges I'll have a crack at some of the longer term ones. The San Marino Challenge is a long-term goal for me, and the Pentagon Challenge could be an even longer term adventure, depending on how much time I have.
That should take up the year until 2014 nicely