I never played the original Guardian Heroes for the Sega Saturn, but the trailer definitely caught my attention. It is developed by the excellent studio: Treasure. They also made Gunstar Super Heroes, which was one of my favorite games for the Game Boy Advance. This seems to blend classic side-scrolling brawler gameplay with RPG elements that channels the classic fun of games like Capcom's Knights of the Round.
This HD remake wil cost $10 when it comes out for XBLA on October 12th.