UFC has never been good at building stars. Like you said they basically sit around and wait for the Conor's to emerge out of the ether, it rarely works. Holloway should be getting a big push from the UFC, great fighter, good personality. Instead he's anonymous..
The only reason I see why they wouldnt push Holloway is because he looks... like an alien rodent...
But the dude is funny, skilled as fuck and has that raw fighter-thing that raises him above the average athlete. He's also 25 and might do this sport for another 10 years. So investing some money in him not might pay off a long long time.
I truly dont know why they dont get Stipe some mainstream tv exposure. He's the baddest man on the planet, and an incredibly sweet and goofy dude, who's also a fucking firefighter. Aint nobody telling me that thats not a compelling character.
Woodley looks like superman, is a champ, an all around nice guy with a family and things to say.
Demetrious is one of the best to ever do it, funny and already has his twitch-fanbase. Get that fucker on Clueless Gamer or something. Or one of the dozends of gaming channels on youtube.
Yair Rodriguez, Donald Cerrone, Gunnar Nelson, Gegard Mousasi, Robert Whittaker, Santiago Ponzinibbio, Cub Swanson (although the UFC has realized it in his case, it seems), Francis Ngannou could all be stars if the UFC started putting them into the appropriate channels (Whittaker could do a fucking gaming competition with Mighty Mouse against some internet celebrities. Who gives a fuck, just give them exposure.) Hell if Özdemir wins his fight against Manuwa thats another guy that the UFC should start putting serious money behind.