ehh, the point is moot for the time being. I'm waiting to upgrade to the 3DS before I bother looking at that stuff. For me there is little reason for me to buy a DSi.
I actually finished Infinite space a little while ago. It's a little uneven. A couple of difficultly spikes, otherwise I was exploding ships at will.
The early battleships really suck. They really blow, up. A mildly upgraded cruiser, or pimped out destroyer tears through them like paper. A piss off weak carrier is more powerful in both utility and damage. They get better late game, but to call them the stars of the fleet is a real stretch. Good for taking damage though. Max out armour and HP, throw in some fire control for some extra damage if you can fit it. Crank up the gauge speed and do some research.
Carriers own. Chuck a pair of them out back with 60 fighters a pop. A BS with some of it's own fighters. Some support ships. If you're lazy, just sit back, otherwise you're free to nail them to the wall at will. Normal attack the small stuff, one shoting them, your gauge speed is through the roof giving you anywhere from 30% to 50% speed advantage which only gets better as the opfor fleet dies. Extra battle speed is good, but your fighters are doing most of the work. Formation foe + barrage/normal to snipe off carriers, but the computer never have enough fighters to counter yours.
Mid game ending was a great touch.
Melee is pretty awful and I can only hope if they make a sequel they make it something worth playing. Expanding the dungeon crawl a little would be nice. The last 1/6 of the story is a little weak. Not much of a payoff. Increased gameplay depth with the space battles would be most welcome in a sequel. As Spock would say in the Wrath of Khan "He is intelligent, but not experienced. His pattern indicates two-dimensional thinking". Better shop data base. Mission notes, better data bases in general.
It's an 8/10 game that would have fallen into nameless 7's territory if it wasn't relatively unique, but there are so many things and problems with depth of gameplay that holds it from true greatness.