The only thing that sucks is people who want a more authentic experience with Dual Joysticks or a single joystick won't be able to play very well competitively. It's the same as Battlefield 3 in that sense, you can't beat, or even come close to the accuracy and speed of a mouse while flying in a jet or anything else really. You know they have to make the game very stable for mouse and keyboard user's, there's no doubt, and I don't blame them, it wouldn't be a pretty situation otherwise.
They could however introduce a filter that lets you play with other people who are using joysticks, that would be awesome. I'm not sure how they would go about that to make sure it stayed legitimate, but I'd love to use my joysticks in this game.

Any suggestions are welcome.. but I'm going to stick with wanting an Authentic Experience in Mechwarrior Online using my Joysticks no matter what is said, but honestly I can't justify using them if I have to go against user's using the Mouse and Keyboard.. it just wouldn't be fun due to the differences.