Sorry man, but I'm a old-school hardcore gamer, and the changes you're asking are way too much to handle for my little mind. There was never a "Retry" option in any Mega Man game (note: Mega Man, not Mega Man Zero or whatever), and there were no ways to restart a certain Wily stage.
Saves are added for the casuals, because they would find it too hard to write down little dots on a grid (like in the old Mega Man games, hehe). Besides, in Mega Man 8: Anniversary Edition and Mega Man X4 through X8, there are saves (and still no way to restart at a certain Wily/Sigma stage). Challenges are not new, they're just ''proposed'' to you instead of yourself making an achievement list. I remember when I used to write down a lot of statistics about my different game plays in my little notebook...! ;)
*PS: The casuals part is a joke.
Random game thought :
Why is Bionic Commando Rearmed 2 getting so much hate? We finally get a real game and they're not even satisfied... I'm starting to hate the gaming community so f****** much...
