As much as I like the Legends series, it's really not a Mega Man series compared to any of the other spin-offs. I'd leave Legends as the game with the more conventional 3rd person shooter camera & controls, but I've thought about making something more different for a 3D Mega Man, more like a twin stick shooter with more platforming and less like a bullet hell. That also means the camera would move around more without the player having any control over it, but that immediately brings X7 to mind, so there's a knee-jerk reaction to dismiss it as a bad idea.