Two things that should be added:

[menace64]

One: I think this used to be there, but each card should indicate what formats it's legal in. Ooooh maybe take it a step further and use the site icons where possible?

Two: Some kind of voting system would be awesome. Maybe even a page where someone can see a sortable list of voted-on cards?

[Kralik]

One: Each card has a listing in the main DB regarding any X-lists.

Two: How should votes be counted? By IP address? By user? What would the purpose be? I think a strategy description for each card makes much more sense than voting. For example, Dear Friends, though generally not used, is the core of my Durin's Secret Society deck. But if nobody uses it and they vote it 1/5, but I vote 5/5, what's the point of that, really? It's not a terrible card, it's just specialized.

I think we can all agree that certain cards are amazingly good (Cirdan, Son of Hamfast, Shotgun Enquea, Tubby) while others are spectacularly bad (TWOAL...) That can be duly noted in the wiki if necessary. The rest are somewhere in between depending mainly on strategy.