After about fifteen hours so far, I recommend this game without hesitation. It is still a bit rough around the edges, but it's doing its job well, and realistic space combat (with conservative technology) is pretty much like nothing I've seen elsewhere.
A few nice things:
What you see in the game is what someone would see in visible light: lasers are invisible apart from at aperture (some diffraction makes you see the origin of the beam) and impact. Infrared and near-ultraviolet are completely invisible apart from the damage they cause.
The read 'lazors' spammed are in fact projectiles (cannons, railguns, coilguns) with pyrotechnic tracers to help confirm and correct trajectory - in space, tracer rounds don't cause accuracy loss like in air.
You can change the frame of reference, which is awesome: to intercept an enemy craft (or rendezvous with an allied craft), put it as the reference frame: it is now immobile and your orbit is twisting around - change your trajectory until it passes by the target.
The scenario and writing of the campaign, while simple, is so far pretty good. The first briefing gives the tone:
Welcome to your first command, Admiral. Please pay no mind to all the talks about nepotism.
That means we need all the commanders we can get in the coming months, so your complete lack of experience is not a problem.
And finally, give your regards to your mother, Madam President. Good luck!
I'll give a more detailed review in its thread once I am a bit further.