It's good conceptually if a little generic and completely devoid of visual sex appeal/atmosphere/backstory/pizzaz/ spice. As for innovations, I do like that by default there is a 'cold war' between all nations, so it's ok to attack ships but not territory until you work out something permanent. The rock/paper/scissors battles themselves look fairly cool, I like the card system, and fleet management (complete with heroes) is easy. The soundtrack is chill and the interface is slick so it's like playing an updated Master of Orion when you're stoned.
The AI just sucks at fleet management though. It's not Civ 5 bad, in that it doesn't strike me as totally and fundamentally broken, but the AI is too hesitant to merge fleets and launch assaults on even defenseless systems when it easily could do so. It's like in Civ 4 if the enemy had a stack of 20 units and all your cities are undefended, and the AI just stood there and waited for you to make the first move. It is unbelievable to me that such a passive AI got through testing.
+ The AI tends to keep the same armor and weapon type for all its ships, which makes it really easy to build fleets to counter and obliterate them. Also, during combat the AI will play cards that can't possibly help it (like it will play a card that enhances its ships' missile damage when its ships cannot even shoot missiles). The AI also will build improvements that cannot help its systems...very often, resulting in wasted money/time/etc.
Hopefully they fix this. It looks like it wouldn't be that hard honestly. Until then I would only play this in MP.