Doom Guy would at least get to rip some sh** in MK11, but I'm actually on board with him being in Smash.
Bethesda has shown commitment to the Switch and has brought/is bringing some powerhouse titles - I think that support should be rewarded with a Smash rep.
I think it also bodes well that they were in talks with Bethesda (was this true?) pre-launch.
Out of all the third parties in that 'leak', this one would make the most sense to me in a weird way, because it's with a new company that has been a great support, and it's a retro character that represents classic FPS games, something Smash doesn't have at the moment.
Just putting my bit in here, I don't believe or care about the leak - it's cool to see the datamined codenames and values, but I'm not believing any rumours until a reveal is made. I was too butt-hurt by the grinch leak to do that again. I've learnt my lesson