Everyone will have their own viewpoints on it, but there’s no way I’d touch an aircraft that doesn’t have an interior. That’s where I spend 70%+ of my time in flight. A cockpit is a pretty important feature in a sim. If a developer cannot release an aircraft with a cockpit, it probably should not be released as payware. It probably should not be made to begin with if the goal is to release it as payware.
An inaccurate but believable interior is better than no interior, by far.