Automated updated opening hours would be really nice IMO!
What the community may accept in terms of automated vs manual updates may depend on the local communities in each country IMO. It’s likely not a good idea to try this in the UK or Germany that have very active communities, but as a tourist visiting places like Mexico and Vietnam I’d loved to have reliable data. Those communities are smaller, and could be more accepting for automated imports. I would also be positive about this in Norway, where we already have bots updating quite a few chain stores.
You should start by checking out alltheplaces.xyz, that already have spiders that collect opening hours.
However, there’s been very few imports from this dataset, but some in the US