Hrm. Midnight's are Ion-based, though as stated before they're significantly more powerful, aided and abetted by Ben's own brand of Mad Genius.
Future engine designs might take this route, though mostly for larger applications where not having to bother with reaction mass for the engines would be a
very nice bonus.
In this way I think this could be like the Diesel vs. Petrol of Fenspace. Diesel is far more efficient, but Petrol burns far faster, thus lending it better to
performance applications. Ergo, large ships would use the 'Diesel' option simple because it is thrifty to do so, and the smaller ships that really need
to be able to scoot have the 'Petrol' option.
Future engine designs might take this route, though mostly for larger applications where not having to bother with reaction mass for the engines would be a
very nice bonus.
In this way I think this could be like the Diesel vs. Petrol of Fenspace. Diesel is far more efficient, but Petrol burns far faster, thus lending it better to
performance applications. Ergo, large ships would use the 'Diesel' option simple because it is thrifty to do so, and the smaller ships that really need
to be able to scoot have the 'Petrol' option.