In fact, I enjoy the seamless transition between the two games, and not having to log an entire new set of moves each time I want to skate around a different location. However, there's one feature from Tony Hawk's Pro Skater 4 which was changed entirely, which has definitely altered the experience in a bad way.

Tony Hawk's Pro Skater 3 + 4 is grinding onto a console or PC near you soon, but you need to preload if you want to hit the streets as soon as possible.