I saw the Sakuracon TV commercial last year. It made me want to go even more, but the overall plotout of it felt simple, but a little stale. It only listed what you could find there, though it didn't risk copyright from the manga and game companies
I'm imagining the most epic convention commercial ever, for Sakuracon at least, and then one for Kumoricon.
I'm envisioning the Seattle cityscape with a Gundam cosplayer walking across it and a narrator saying, "There is a weekend in April unlike any the northwest has ever seen, except for once a year. That weekend...is Sakuracon! Anything you've ever dreamed about in Anime, Manga and Games is all there." and I'll stop there for now. But for Kumoricon, it would open up in a dramatic thunderstorm, but fearlessly walking are brave cosplayers down the streets of Portland (in ponchos and umbrellas), converging on the hotel site.
And back to insanity...I'll take YOUR potato chip...and EAT IT, then offer oreos as an ppology.