Well, I've got it on the 360, and I loved it, indeed I recently just played through storymode again having not really done so since I got it.
However, it is a very niche game, which is a shame, because despite that it could have been so much more popular had it done the gameplay right - As I say, I loved it, but the criticisms about the gameplay are, in my opinion fair...
For example, the RTS elements - Tim Schafer can talk all he wants about how it's not supposed to be played like an RTS, but the fact remains that those battles were a massive ballache requiring me to recruit and order around units. They could have kept the stage battles but simply given you the solos, whilst getting two armies to fight each other - this would have been more epic (imagine, two hordes going at each other in the mists of the dry ice mines... You in amongst it using your guitar and axe to bring aid to besieged Headbangers, or dicing with their general in hand to hand combat in order to demoralise the enemy... It could have been amazing - instead I just pumped out as many units as I could and played intermittent facemelters to secure victory.), and gotten rid of the annoying having to recruit and try to control resources and such.
Further - The game was in dire need of a decent tutorial, or to be more specific: better and more obvious explanations of things, I'm pretty retarded, and as the lowest common denominator I found it irritating that I basically had to google how to free bound serpents, and legends.
So, I guess what I'm trying to say is... Whilst I loved the first one, what I think it needs more than a PC release, is a sequel (or re-make), which focuses more on the awesome - Hack and Slash, Guitar solos, Epic Metal world with Epic Metal storyline. Getting rid of the bad parts - RTS being the main one.