Thanks for League admission, I suppose I am too late to start playing this season, which is fine. Chose Nurgle so that I had a team that I didn't already see in the league (because I like being a unique snowflake). I would say my proficiency with the game is up to a 4 (I think that is second worst....).
Choosing Nurgle first was kind of rough I guess, they have 0 football skills with the exception of the Pestigor who has +1 to his rolls when blitzing. I think I lost the first 10 games vs the AI without scoring once. Nurgle sure is beefy though, their guys don't die worth a damn, I think I lost one Rotter in about 20-25 games, of in which I replaced him by killing some poor Goblin and converting his ass (what a random ability). Some of their abilities are cool, people failing to perform actions or move because they are in range of the Beast of Nurgle and get Tentacled or hit by Disturbing Presence (I think thats it). Now that my guys have some levels, I can just sit down with them and go toe-to-toe with dwarves and have a good ole fashion melee extravaganza, while my Pestigor's run the ball up the field. They are getting AGI skills (+block), everyone else is getting +rapeface.
Once I got a hang of the rules, things got better. I just won my first "Cup/Bowl" in the single player campaign. Went 2-0-1 in my regular bracket (2 brackets of 4 teams). In the playoffs I won the first one, then get matched up with the team I tied with in the bracket (Chaos Demons, which makes the announcers spout some lulzy shit), beat them 1-0. Incredibly fun/addicting/rage-inducing game. Can't wait to get in it with real people.