Hi - thanks for the ideas and feedback!
You're absolutely right that dynamic FoW would be a very cool feature. Unfortunately, you're also right that it's not terribly easy to implement, especially considering nasty things like corners, doors or trap-doors and all the other goodies DMs love in their games. Still, we've taken the input and put it in our feature planning - let's see what we can come up with!
I totally agree that a drag-hand for moving the map around would be incredibly useful. Consider it on the roadmap as well!
By the way, you're very welcome to also stop by our Discord to discuss further features!
Thanks again for your support and I hope you enjoy the app!