As for other mods, here is one that I just worked on today. I cut a recessed platform on the chin block to receive a set of 1/4scale Giles gears. I capped it with a layer of thin ply (1/64"?) and FG'ed over the area.

I'm not a big fan of wing mounted gears: harder to fix when broken and typically likes to nose over, especially when flown off grass. I don't much care for scale appearance for this aircraft, so I opted for better ground handling, and taller gear to clear the 16x6 prop I plan to use.