I'm a newbie to EDH and deck-building in general, but I suppose I'll give the best feedback I can.

Firstly, the layout and organization of the description is great! I love it when people capitalize on that, because it makes everything a lot easier.

As far as the deck itself goes, having all planeswalkers certainly intrigues me, but sounds like it could be a fun and challenging deck to run. The four-color mana-base may make things harder (but I have no experience with anything over two colors, so I'm not one to talk, haha..). I will say, though, that if you plan on buying this deck on paper, good luck..?

(Also, I know you aren't really focusing on adding more cards, heh, but I believe Sorin, Grim Nemesis could be able to generate a lot of tokens, card draw, and life, especially with the last ability, since the game starts with 40 life. Just a suggestion, though, of course!)

Well, uh, that's all I've got, haha. Sorry I can't offer more of a detailed mechanical feedback.