[jimbob]

I agree. I'd prefer Newtonian. It could result in a diverse number of engine types, which would really make it feel like there's been a fusion of different Sci-Fi genres.

i.e.
In the Trek Universe you get these big huge engines, but just one or two (with a few exceptions of four). They're big, and difficult to put out of commission, but once they're gone, the ship is dead in the water - sort of an "all or none" effect.

It seems to me from the pictures that the SW Universe has more (4 to 8?) large engines on their capital ships, so it would be (numerically) easier to lose an engine or two, but the effect on ship movement wouldn't be quite "all or none."

Other genres could have the 20 - 30 small engines per capital ship as found in the P&N Universe. Slowing these ships would be easier because even a small increment in damage can take out an engine or two... but stoping them would be more difficult because they have so many small engine components.

Different genre engine types will also have an effect on ship construction and the variability in ship velocities for each genre, but that's another topic really.