I stopped playing Evolve regularly for one reason: I kept getting matched up with a bunch of No Mic Nancys. Unless you are the Monster, The game is simply not fun for us mic users unless we have mic using teammates. It is an exercise in frustration. Here I am trying to communicate and am forced to play with three people who refuse to do so. I cant warn them of things or tell them anything outside of using the Pings. And they cannot warn me of anything.
While casual gamers may not care about Mic usage. We Hardcore people do. And we are the ones people ask if they want to know what games are good to buy. We are also the ones more likely to buy the skins and such you are trying to sell.
Edit (cuz computer fail):
Please get us a Mic using or a “Chatty” Matchmaking prefrence. Other games have done it in the past. Pity it has failed to become an industry standard.