The lack of mouse support is a huge disappointment for me as well. For those of us that are a little longer in the tooth the lack of support is going to obviously be a bigger deal than it is for someone a little younger. Face it, the majority of us grew up clicking and a golf game simply isn't a golf game without click support. That said, it still won't prevent me from making a purchase as it still has plenty enough to offer to keep me entertained for a while. There has been such a huge void in the market for so long that if a third or fourth game hit the market I would probably purchase them as well.
Still, PP looks to be the far better representation of the the game that will hold my interest over the long haul. TGC from my perspective still looks a tad too, and I hate to say the word for fear of reprisal (arcadey) for my tastes. But, for the time being until PP is ready I'll be crossing over to the dark side and using a (gulp) XBOX controller to play my PC golf. Sorry, but I'm in dire need of a golf fix.