I did feel sleepy toward the end of my first full game last night. However, I suspect this had very little to do with the quality of the gameplay and quite a bit to do with the fact that I stayed up until 4 AM trying to smash the pirates.
I did it, by the way. An Akkan, 5 Kols, a Marza and a Sova with a 22-Kodiak escort to draw the defenders' attention, with 3 Krosevs and about 50 Javelises jumping in from the sun after the Corsairs were all on the wrong side of the gravity well, with supporting fire from my Novalith Cannon, with full upgrades on everything. I didn't manage to kill anywhere near all the pirates (there were still over a hundred Corsairs left after the fight) but I did manage to smash the base and get most of my fleet - including all the capital ships and 20 of the Kodiaks - to safety afterward, thus leaving the once mighty Pirate Empire broken and disorganized. It was epic.
At that point I was so tired I forgot where my factories were, so I decided to get some goddamn sleep.