Sorry for the late reply, thanks a lot:), i just wasn't sure at first because it seemed already quite well-mapped compared to what im used to from Singapore. (I see Claudius Henrich has since added the enclosures)

sadly i'll be flying back on Sat, the background layers do sound cool, I just tried mapping the enclosures as areas using Berlin/Geoportal TrueDOP20RGBI (2022), but it's a bit hard. (lmk if you know of any layers for Singapore/in general not built-in on iD or JOSM by any chance ig:))