Wow you've put quite a bit of work into this! I mostly update trails/streams as I see them missing or incorrect, but not to the extent that you've been doing! I use Gaia GPS primarily when I'm out in the field and they don't seem to update their tiles super frequently from OSM unfortunately. I just floated a portion of the King's River a couple days ago and noticed that it wasn't completely mapped south of 412. Quite the coincidence that you just happened to be updating the map at the same time!