Brian,
I really do not fall into the complete rework category anymore with my Christmas layouts. A few years back I had to disassemble my larger layout for space/work reasons. Now I simply add to my Christmas layout each year making some village changes and maybe even another track/switch level on the multi-level layout. I wish I had the space to re-engineer another major layout, I did love having it thru out most of game room and home office. I do enjoy seeing pictures of what you and some of the other members are building, lots of great stuff going on right now.
PCRR/Dave