Re

{1}
The government doesn't understand what is a permalink, but see this FB post: https://www.facebook.com/gakeicom/posts/2936533403285783/?locale=zh_HK
The new layout (while lacking details) can be seen as significantly different from any of the old/interim layouts. This warrants a cleanup since those old paths are no longer there irl. It seems likely the new terminus will be a sawtooth one (as per planning preference), but whatever, by the time it needs to happen, someone will draw them.

{2}
I can add back the 485-487 number, but I really don't think the new building(s) will have exactly 485-487 (think: the old bus terminus is probably 483, right?)

{3}
While OSM aims to capture "the essence", at least I think OSM should also capture "the form", especially when it comes to multi-phase constructions. You notice I actually drew 2 construction yards; presumably, you can move them around to suit the updated irl situation, such that one of them will be for the High Block, another for the Low Block. People will be confused when the map says they have to enter a construction yard when in fact the yard is separated by a road. Again, it do be like that irl, and all maps should at minimum capture the irl factor to be called a proper map.