Mixer Pro = 1 Free Sub
Similar to Twitch where if you have Amazon Prime, you get one free subscription to any streamer every month. Mixer should do that where if someone buys Mixer Pro, they will get one free subscription to any partnered streamer every month. Mixer Pro doesn't have enough benefits in buying it, and adding this would definitely get me to buy it.
I recently tweeted about this and I think it'd be a great idea. I also completely agree that the Pro perks don't really seem to be offering a value equivalent to the cost- especially for PC viewers (as I understand it, viewers on other platforms see ads, but I don't on PC).