To be honest OP, I don't see this as thread whining. In fact, in a game that does focus on having such a diverse cast as it does, it is slightly ironic that we don't see a wider scope for the villains side. Of course in the case of Junkrat and Roadhog, they aren't really affiliated with Talon (much like how D.Va, Lucio and Pharah aren't affiliated with Overwatch, or at least last I checked).
Of course, you can say that Moira's inclusion has fixed that a bit, but it would be nice to see even more playable villains or antagonists in the game. Hell, I'm still waiting for this guy to show up (and I feel like it could be soon too). Sanjay is right there Blizzard. We know you are planning something with him and I can bet that when he is introduced, he is going to be featured with Lucio and Symmetra in a cinematic.
Even though the ratio has been 2 Good (Ana and Orisa) and 3 Not Good (Sombra, Doomfist and Moira), I'd like to see at least one more bad guy character just so that we can have a full six person team of "Team Talon" (even if Sombra may not be with Talon full-time, she still operates with them, so I'm counting that).