I was so stoked when I heard about this game and bought it right away as I had spent so much time back in the day with THPS 1 & 2. After playing it though, I am somewhat disappointed. I realize the game is only $15 dollars but, I feel they could've included more.
I still find myself enjoying Skate 3 more. It's closer to "real" skateboarding and has a lot more content. You have to line up your grinds properly and "flick" your tricks right. I know they are different games but, I should've played the THPS HD demo first. That and you can pick up a new copy of Skate 3 for $20 these days.
All this being said, I don't feel absolutely robbed by Activision. It's fun to revisit the original game(s).