I offered my graphics and the vote spreadsheet I made for the football poll to anyone interested in taking the lead, and it still stands. Don't really follow CBB enough to be a reliable voter, and have more on my plate right now with work that I don't really have time to take the lead. If someone does want to work with what I have, you'll need something that can edit the layers on the graphics. I use Photoshop, but I think there are a couple free apps that would be adequate, like GIMP. I'll create a background for hoops if you're not into design, you'd just have to update the team names/rankings/scores/etc. on it as needed.
I think the reason the football poll was fun partly had to do with the unique nature of CFB, where a poll picks just 4 teams out of 130 who get to play for the title. With 68 teams making MM, don't know if ranking a weekly Top 12 would have the same impact....they're pretty much all probably going to get in some way or another (referring to Top 12). Maybe something that focuses more on the actual tournament seeding and/or who the last 4 in/first 4 out are?
I think what we did with CFB really did help get more engagement with the season, so it'd be cool to see what kind of similar ideas we can come up with for other sports.