My wife and I had the same opinion. Magical to run around the castle for a few hours and do the early classes, surprisingly good combat mechanics, but then… Nothing.
It is really hurt by the inclusion of brooms. They necessitate a huge world so you can’t cross it in a minute, but then it’s too spread out and empty. At least in Ghost Recon my world-design-crippling flying devices have rockets and gattling guns.