The Q-ships idea is a great one, IMHO, especially for multi-player (nasty tricks are even more fun when there's a real pair of human teeth grinding together over them <smirk> ).
I think it'd work better once the proposed ability to see your opponent before deciding on combat is in place.
"A transport? Easy prey! Charge 'em, boys!"
<a moment passes>
"What the . . . ?!? ARGH! <squeak of teeth>"