1) get a keg to convert to a keggle and start doing 10 gallon batches
2) get more acquainted with malt-oriented beers due to the hop prices/availability
3) make a habit of bottling from the keg, bottling at least a 12-pack or more from each batch in order to build up a good stockpile of different beers to keep a variety on hand at any one time
4) after making a habit of #3, start entering competitions when I have something worthy
5) also participate in HBT beer swaps
6) do some real high-gravity brews, bottle, take them home, stick them in the basement, and forget about them for several months
7) come up with at least one original recipe, rather than modifying someone else's, and brew/revise it until it's good enough to become a real "house" beer
8) stop procrastinating on my brewing-related electronics projects and finish building all the cool gadgets I have in mind, so I can stop kicking myself every time I brew about how much time I could be saving if I had them
9) continue improving my process for yeast culturing (slants) and keep expanding my stock of different liquid yeasts, to have enough variety on hand to brew nearly any style I want, and be able to reliably bring it back to pitchable quantities in a reasonable amount of time
10) improve my palate to the point where I can do a much better job of identifying different good/bad flavors in my beer so I can more easily figure out how to control them. This ought to help a lot with #7
11) do more mini-batches (either on their own or splitting a small amount from a larger batch) to get a better feel for how different grains/hops/yeast affect the beer... This ought to help a lot with #7 and #10
Looking back on my list, I'm pleased with myself that most of the things on the list don't involve spending lots of money on additional equipment. I've only been brewing for about 11 months, but I shudder to think about how much money I've spent so far - it's definitely over $1000 easily (building a kegerator was a big part of it), and maybe closer to $2000, so I very much like the idea that I've finally got most of the stuff that I need for a while and that in 2008 I can dramatically reduce my spending by buying mostly just ingredients and not too much equipment.
And by the way, great thread
I think setting a list of goals is a great thing, and it really helps to see other people's goals as well.