I missed the whole event but still have a mostly full storage...I had to come up with ways to free up space, such as keeping warrior stuff with my warrior, monk stuff with my monk, mesmer stuff with mesmer, etc. instead of keeping it all in the storage.
The bottom line is that making a larger storage would NOT encourage more farming or anything else like that. If a farmer wants more space they can use one character slot as a mule, or 2, or 3 slots. On the other hand, those pack rats that want more space would fill up any extra space they were given and then be craving more. I know this is true because it happens to me.
Think about when you were pre-searing, we all got by with just that little belt pouch and the main inventory. Then you get to post-searing and you suddenly triple your storage capacity, and guess what? It fills up faster than you could have imagined.
If A-net added more storage space we would all horde more items and fill it up faster than when we went post-searing...
I have played that other online game, wOw or something, and there is much more storage space on my character. Is it full? Dang near full all the time! But go figure that I keep coming back to a game that has less storage. The trade-off for better game play and game ingenuity is well worth it for me.
It really comes down to being happy with what you have. Thanks to A-net for making a truly great game and NOT charging us a monthly fee to play it, and for continually making it better!