Welcome back!
We also haven't used ours much either in the last few years, but I'm getting it tuned up and stocked. Everything still works fine and the Trojan T-105's that we bought in 2003 still seem to be holding a pretty good charge.
I spent the last part of 2014 recovering from a bad fall and two broken bones; DH had a hip replacement last October. Didn't feel like doing much camping at that point!
We've ordered two new wheels and tires, sticking with 14", but aren't changing much else. We changed over to fluorescent lights in the dinette and kitchen area a while back and we don't really use the other lights that much. During the summer we mostly sit outside at night with the Coleman lantern playing cards
and talking.
I am really looking forward to our first dry camping trip of the summer!