I think a key aspect of this format is that while the power level is far too high for you to do whatever silly thing you might want and get away with it, the diversity and depth are such that you have lots of options on things you can do, and you can do them very, very powerfully. It's a cut-throat format that doesn't really nourish the typical casual brew, theme deck, or budget deck, but it lets an attentive, strategically-minded player develop and fine-tune a list into something really cool.
Tempted as I am to build a Storm deck for Canadian Highlander (I have the cards, or am close enough that I could easily get there), it's something that's already been done, done well, and done within the scope of the particulars of this format. A Storm deck I'd try to build wouldn't be as good as what the experts on this format would come up with, and if I netdecked their lists, I'd just have someone else's deck that I'd then have to learn to play. And if I did accomplish that, Storm wouldn't really lend itself to games that would be interesting when played over a message board. That's not to say the mechanic deserves its reputation for boring, uninteractive games (it doesn't), but given the structure of gameplay in our games run board, I'd be apprehensive. So I'm thinking of just building some sort of control deck or something instead...