I have a 2002 9er and my front suspension is due for some TLC. Both sides are leaking and it dives pretty hard under braking.
I'd really like to do the work of replacing the oil/seals myself but I don't think I'm going to have the time to get it done to be able to enjoy it this summer.
I'm just shy of 23k on the clock, weigh 220lbs+, 95% of my miles are solo city commute, and 5% are 2-up 'touring'.
This might be a good op for me to do something like change the springs, oil weight, etc. to 'improve' the suspension and am looking for opinions etc. on what direction I should go parts-wise based on my riding habits.
I think you pretty much covered it; seals, springs, and oil. Valves will provide additional improvement if you want to spend a little more, but are a little more work to install (not horrible though). Springs and oil should make a big difference; the stock springs are weak, especially so for someone over 200lb.