Welp I had someone quoted by I lost it yet again, ho well. Not even sure what it was about.
Anyway,
EricTheGamerman
I wish people would stop assuming that since someone else doesn't think a character can get in, it means they don't want or like that character. Jesus Christ, other than Dragon Quest 3 I hold a completely unbiased stance, and my only issue with DQ3 is all the losers all over the internet who treat you like garbage because you are more logical then they are. I just want them to be wrong because of how much of a stain they are.
Seriously, I've never touched Ninja Gaiden but ninjas are badass and I grew up on Naruto, so I dig the whole 'physical badass that also has limited mystical powers' ninja trope. With this in mind and after learning that the claim against Hayabusa held no weight and finding no other claims, I see nothing that currently prevents his inclusion.
Doomguy is a completely different story. You bring up Bayonetta as a counter, and many people bring up Snake as well, but it's just NOT the same. Snake is easy: he's a dude who is military trained and can hurt people without being lethal and you can use his weapons and some of his techniques in a comical manner almost while also keeping the gritty tone of the character. However, he never does anything super brutal and from what I have gathered, it's not in his personality to take violence past the level it needs to be to get the job done.
Bayonetta is sexy, yes, but nudity is not part of her personality or core character, but merely a result of using her abilities. Her chill demeanor about stripping naked and still being classy about it is what you are referring to, and preventing her from stripping naked takes nothing from her personality as she's amazing represented in Smash ("If you need to learn how to talk to a lady, ask your mother!"), the only things toned down about her character being use of language and innuendos.
Doomguy though? Being excessively violent is at his core personality. Weapons aside, when he fights with just what his mama gave him, does he tone it down and merely punch them down or at the most break their neck or something? HELL NO! He rips them apart with no restraint and does it in different ways as if he's trying to make a work of art out of it and keeping himself entertained. He doesn't slow down and he doesn't give a **** about you or your friends or really what anyone says because he's gonna do what he wants and if you are in his way you'll shortly be out of his way and in various amounts of pieces. He's an original badass and I love it and so do others, but how could you possible bring that to Smash? Will he punch Mario's face off? Will he rip Pit's wings off his back a la God of War? No, he won't, because that wouldn't be allowed in Smash. Thus, if he DOES make it in, at most he will just have moves that look like they would have that kind of impact but have no gore or blood and then he's not really Doomguy anymore because his personality of ripping through the competition literally has been removed and he's just generic FPS guy.
Just for funsies, a lot of people bring up Mortal Kombat and how for this same reason Scorpion or Sub-Zero will never get in Smash...problem is that Injustice 1 and 2 have made both them and Raiden into a form that is of tolerable violence for other games, meaning there are canon variations of this characters showing restraint and holding back...does Doomguy have this? Does he have a game that was built from the ground up with making him less violent? If he does it improves his chances, if not we are back to the start here.