I'll buy it when it's in the $20 range.
I'm not keen on some of the changes going from Warhawk to Starhawk, like the focus on manual shooting game play mechanics. Magic health regeneration is also not a good idea.
This will be proven over time, in the beta there were a lot of skilled jetpack users would could aim incredibly well, remain out of your aiming range (no help from the simulated inaccuracy of the guns), and fade away to regenerate health as needed. They were a complete menace in the beta and it's my feeling they will completely ruin the retail multiplayer experience unless Lightbox makes changes. They got rid of hover on the aircraft, but replaced it with hovering soldiers with regenrating health which is worse.
The three maps from the beta were very uninspired compared to the variety and level of detail and interactivity in Warhawk. The lack of structures that just exist in the evironment for you to use as cover, or a hidey hole is lacking in Starhawk. The Dust map has an abandoned little ghost town, but it lacks any sort of interaction (you can't hide in buildings) and is just there as window dressing.
I feel that having more pre-placed structures that players could use in addition to the build & battle system would prevent the high level of base camping all throughoiut the beta test. The tactic employed in most games was to buiuld up the home base and just camp. This is worse on Dust where it's just a huge expanse of nothing with beam turrets and those machine gun turrets at eitehr end of the map.
Lightbox cranked up the rift energy collection for doing nothing in the 1.3 build of the beta, and reduced the amount of rift you gain from shooting rift barrels; deincentivizing the forward positioning and jockeying to control rift energy rich areas of the map and encrouaging base camping.
Not having a logical melee attack all through the beta was also a problem. In the first release of the beta, the melee attack was a free kill canned animation from about five feet away. So if you were engaged in a firefight, it was easier to dash in - once close enough press melee and get a free kill. Then they reduced the distance for the melee. Then they dropped the canned animation. Then the melee in the 1.3 build was the opposite problem of the first build, now when I knew an enemy was going to try to knife me and I'd run away my character would get magically sucked back to the enemy so they could perform their canned melee kill.
There are things I do like. Getting rid of the hover mode from Warhawk (the single most abused aspect of that game). attempting to balance the Hawks so that ground troops sort of stand a chance. Build & Battle is neat. A much better scoring system that can allow for a good player on a bad team to be the top player at the end of a game.
Those are the reasons I'll pick it up once it goes on clerance or I can find a used copy in my price range.