Okay, I've been playing this quite a lot over the past week; took me a while to get around to playing the latest version, and at first wasn't sure what I thought of it. I was dying very frequently, rushing towards the locust spawn points with all guns blazing trying to destroy them (And I quickly found out that you don't have enough energy to destroy them), and generally not concentrating on defence. The more I play it, however, the more I try out different tactics.
I went through a stage of holding off a single point on the map by building about 4 turrets, but even then I was getting overrun. At the moment, I make a rush for one of the far spawn points and attempt to take them out by hanging around a nearby shield generator and recharging whenever my shield runs out. By the time I've destroyed that and turned it into a shield point, the locusts have caught up with me, so I hold them off for a while, maybe build a turret, and then move on to the next spawn point. I generally get overrun when trying to take the second point, though. Perhaps I should try to take out the mothership first.
Anyway, my point is that while the game isn't very accessible at first, due to how often you die, I'm glad you did something different with the gameplay, because it's actually really deep and it keeps me coming back. You've got my vote!
Edit: I just destroyed all of the locusts!