Right. The issue I take with that is this by having Sonic automatically avoid every obstacle that slows him down, they are taking the gameplay further from its platform roots. Contrary to popular opinion, Sonic 1, 2 and 3 weren't about constant speed. The games were fast, but only the most skilled players can play through a stage without stopping. Here, the challenge to maintain speed seems to have been removed. If I let go of B I'll slow down, so is there a point? Going fast, fast, fast all the time, with very little resistance to your speed is boring and was one of people's biggest complains about Sonic Advance 2 and 3.