I am all for sub!Matt who pushes his own boundaries and gets involved with risky sex because he doesn't value his own consent, I am about that life, but I'd kinda like to see the opposite - the one where Matt has been around the block a few times and actually understands how to engage in bdsm - any sex - responsibly. (Maybe he learned in college from Elektra or an OC?) Where sub!Matt is really clear on and respects his own limits because he understands that if he gets triggered he might end up accidentally hurting his own partner, and because he doesn't want to incapacitate himself and interfere with his nightlife, and also because he actually values himself enough in this situation to take care of himself (Matt/Happiness OTP forever).

If you want to do the h/c variant you can have somebody who pushes Matt's very clearly outlined limits and ends up getting punched in the face, because I'm always up for reading about jerks who don't respect consent getting punched in the face.