Main Issues:
1 - the indoor first person sections are straight up treated the same as the overworld right now.
2 - Only the first set of levels are anywhere near touched as the bk2 TAS didn't playback correctly for me in the bizhawk core
3 - I still haven't found an elegant/good way to fix up the trees so the treetops don't look odd on their own.
I'm sure there's a lot of other issues that i've missed in the post but i'm putting this out there for anyone else to try to work on if they feel up to trying it. if i do any updates to it i'll edit the post to say so however.
12/09/2020 Edit - updated with modifications by geod and metadata script.