This looks really solid. We generally play with power cards, as writing everything out can be a big pain...but storing and upkeeping power cards is generally an even bigger pain. Unfortunately, there's not enough space on your power sheet to list all the fine details that will prevent mid-session lookups ("so do I get +2 until the end of your turn, or until my next attack?", etc., etc., et al), especially on those extra wordy powers that you get as a wizard or warlord (no effing way you're fitting Bigby's Icy Grasp on this sheet...)
More and more
4e is seeming like an "open book" RPG unless you want to spend a lot of time and money on play aids. You figure cardstock paper, printer ink, and card sleeves...I've spent probably $25 on power cards. It's absolutely ridiculous. When the
WotC power cards start to look like a good deal...bleh. It's like they planned it all along. You start saying "is $10/class really that much?" But yeah...it is. You're talking about $160 to have a copy of each class from PHB1 and PHB2. Does anyone remember getting into this hobby because it was cheap?
Yeesh, sorry for the rant. Really, you did some great work here. Character booklets are great. =D