GF-1 user - upgrade body, lens or wait?

Greetings! I've been shooting with GF-1 for a since early 2010. I mostly use the camera for general family shots and as a walk-around camera. I almost exclusively shoot with the 20mm -- but also have the 14-45mm kit lens and the 45-200 zoom.

My real reasons to consider upgrading is I feel like I keep missing shots due to slow auto-focus. I love the images I get out of the camera (I shoot some RAW but mostly jpeg -- and like the Panasonic jpeg look). I also hate the lack of viewfinder but recently ordered a LVF1 to see if that helps.

I'm not a real photo gearhead -- but would make the jump to upgrade (either camera body or lens) it if will really help. So, what does the DPReview Brain Trust recommend and what upgrades make sense?