The title for this game was literally called "JoustDX" during the prototyping stage, and is a love letter to the game and other nes action platformers like Castlevania 1 / 3. The issue with "purposefully" having terrible controls is that it becomes more of a net negative than a positive. When I finish the game in the new engine, I will consider making a "Painful Reality" setting to turn on slidey physics.