That's really cool. Cloud be really use full for local businesses. They often embed Google maps, but I feels like having a map from the local are would be sufficient, and cheaper.
It depends what you use it for. I plan to use it for blog posts where I show the track of where I walked. I actually like that the map won't update. It wouldn't make sense to show me walking across a map of the future, would it? It's a record of the past and the map should be frozen just like the writing.
Sure, but in GP's context of local businesses, they certainly will want to keep up-to-date with any changes to make sure customers can still find them.
Protomaps generates daily world files I believe [1] but I haven't confirmed that they're used by the download tool yet. In theory you can download the data everyday to pick up updates.