1 - Doing a 2 Months league is awesome, you can cycle between formats and this way give everyone a taste of all forms of gaming.
2 - Creating V cards, either using the same card text and changing the culture symbol (to show it's a special V prize card), the image or even the card text would be an awesome idea. Just adding "The Lost Homely House" tag in the end of the card won't bring anything "worth fighting for", if you know what I mean...
3 - Making the league fair and square. Allowing a player to play against anyone is just fine. But in the end, players that spend their days playing will have a final score way higher then someone who play less. Like, I see players with 30 games, others with 1 game (I even see players with 1 win on top of players with 5 wins and 4 loses). Making a match limit number would be great. Something like: "You need to play 15 games until the end of the league", so in the end your name can be part of the game charts. (Hope I made my idea clear).
I'll end up having a few more ideas and I'll post them here..