So from what I have gathered, it seems that we don't have a Server Browser because this game was built for console first. Essentially for PC players, it is a console port. Due to the rushed launch, we didn't get a Server Browser because that is traditionally a PC UI. That is also why there is no M&K for console players. Quick Match and MM is mainly a console method for joining games and Server Browser is a PC method.
This also explains some of the other missing functionality and design decisions within the game. Since consoles only have some many buttons, they had to limit functionality to match the button count whereas PCs have basically an unlimited number of input options for key and mouse binding.
This sucks.......