Heh, I looked at the top 30 last year and it's actually pretty similar to the top 30 this year. Not only are there a lot of Marios and Zeldas in there, but you can really sum up the top 30 of both years with the following description:
Nintendo first party games
Sony first party games
Resident Evil 4
It may simply be that our community as a whole prefers first party games. I mean, the top 3 games on the Genesis are all Sonic games. Halo 1&2 top the XBox list. First party games in general tend to get a good budget and don't ship with a bunch of bugs. On top of that Nintendo has made the most first party games over the years and they tend to put extra attention on the Mario and Zelda games. Perhaps the rankings are fine how they are?
Having said that, a rule like only 1 game per franchise or 2 games per franchise, or whatever, when making people's lists out could add more variety. Of course that might make the event a lot less fun for people too. It might just be better to keep things the way they are, let people have their fun, and just accept that the top of the list is going to have lots of Mario and Zelda games. (I am just thinking out loud. I don't really know the answer.)
Anyway, I just want to say I appreciate all of the effort you put into all of this mZuzek. I personally had a lot of fun this year as I do every year. Thank you for all of your hard work.