[Aiken]

You could like one these ideas (or neither of them):

1. Race.
Plot: 2 ships (different shipsets) are competing with each other in speed.
Aim: distant planet (probably with small finish gate on orbit).
Losing ship is forcing its engines (bigger exhaust, or more intensive color).
Additional details: glowing buoys (represent lane direction), audience (other ships).
Visual fx: motion blur. It's a must have imho.

2. Head-on crush.
Plot: 2 ships (again) are flying towards each other on high speed. Someone have to turn aside, else...
This kind of scenes is quite popular in Hollywood movies.
Additional details: they can fire to each other, burning hot front shields, something in the backdrop (planet, space battle).

3. Burn Earth.
Plot: Big ship is falling to earth (preferably to the big town).
Ship surrounded with plasma cocoon, it's almost destroyed and scattering to pieces.
Additional details: missiles starting from ground to intercept and destroy the treat.

4. Steeplechase in asteroid field.
Plot: small ship manoeuvring in asteroid field. Hostile ships (fighters) colliding with asteroids and each other. Explosions. See SW's Millenium Hawk hiding in the asteroid field for great example.