Personally, i think the Nebula Class is a much better design in comparison with the Galaxy class.
It's smaller, compact size means that the shields should be more effective and stronger.
Also, the adaptable mission pod should mean that it is the most useful class in the fleet, eg, sensor pod and tactical pod.
With the sensor pod, it would be completely unmatched, theoritically it would have the ability to see alot further than any other ship.
The tactical pod would make it one of, if not the strongest in Starfleet, the pod is quite big and it would probably hold a fair few torpedoes.
It's smaller, compact size means that the shields should be more effective and stronger.
Also, the adaptable mission pod should mean that it is the most useful class in the fleet, eg, sensor pod and tactical pod.
With the sensor pod, it would be completely unmatched, theoritically it would have the ability to see alot further than any other ship.
The tactical pod would make it one of, if not the strongest in Starfleet, the pod is quite big and it would probably hold a fair few torpedoes.