Thanks for the feedback - these are great ideas!
Creating a new monster or NPC based on standard stats will be put on the v1.2 roadmap.
Importing from DnD Beyond exists already as a prototype, not publically available. We can also bring this into v1.2. There are two issues: 1) we need to consider the maintenance effort as DnD Beyond can and will change their formats regularly and 2) the usage will be for expert users only - perhaps somebody in the community can create and maintain a how-to video somewhere on YouTube