Definitely an improvement over the first stardrive, which in fact was just an unfinished game. Stardrive 2 is definitely a more solid product.
The turn based change was much needed, and it's there. More than that - from what I've seen, game is very moddable, which is always a good thing (First Stardrive had pretty impressive mods, eg. Timmod, so we might get something terrific) as people can add more content/work on broken stuff.
Lore? I dig it a lot. I mean, maybe it's not deep or whatever, but all those nine civs are pretty nicely thought out. Overall tone is rather "chill", instead of crazily pretentious, realistic style.
Personally, I like the combat. The fact that you can actually "feel" all the fiddling with ship modules. The encounter maps ain't big, but still you can use some clever tactics to annihilate your foes.
Economy is simplistic but pretty straightforward. I've done more than 500 turns and don't really need to micromanage all the colonies. Freighters (Pretty nice system) are doing everything for you. One of the colonies is starving, and you have much more food on the other one? Don't you worry. Freighters will help you out, so you don't have to set everything in place. That helps a lot if you're trying to play on huge galaxies (Altough, I was little dissapointed about maximum number of star systems you can have in a game :/)
Research is nicely done, as someone said before. I like it a lot.
On the flipside - Very little 3d art. Therefore, you will be stuck with a few hull models and that's it. It's not particulary bad thing, as it doesnt really affect gameplay (Maybe in a little way, because you can't create your penis-shaped cruiser. All in all, you're forced to pack all the modules on one of a few configurations) - I'm still hoping modders can do something with it(Provided that number of hulls ain't limited).
Diplomacy is rather minimalistic. It's not particularly bad, but at the same time - nothing groundbreaking - especially with lack of Allied victory. The only way to achieve one is thru conquering all the other civs. Therefore, you need to fuck all dem treaties in the end game.
Tactical ground combat - Well, Angryjoe is a fuckwit, and everyone knows it. He sucked at tactical ground combat totally, but at the same time - he was kinda right. It ain't specifically the experience I was looking for. Most of the time I'm clicking on "Auto" instead of throwing my fellas out on those little, square grid maps. Instead of doing 3d stuff, the sole creator of this game should have sticked to excellent 2d sprites/tokens (I bet they would be excellent, as art in this game is glorious) doing combat on bigger maps. What do we have? low poly, not-so-fancy 3d models (Why the fuck they haven't made more different hulls instead? :/) with terribad animations and stiff movement. I'm not a graphic whore, so I don't really give a shit about how it looks. It just feels...Bland. If you're expecting X-com type of battles - forget it. Just threat it as a minigame.
In Cheetah score Stardrive 2 would get 6+/10.
Good effort, especially because it's a one man project (+ outside assets)
If you're in 4x hunger, this and Star Ruler 2 should entertain you for some time.