While I totally understand it from a dev perspective kind of sad we didn't get a full set (1 primary and 1 secondary for each class). Hopefully it comes sooner than later, I envision the game in it's final-ish state having 8 guns for each class. 4 primary, 4 secondary. (And maybe like one more alternative support item and special each)
Edit:typo
Four weapons this round. Adding a weapon to the game is very resource-heavy as it needs mods, overclocks, skins, and paint jobs, and considering we need to add at least four at a time + try to balance them toward the other weapons and the game mechanics, it's a huge task.