[2019] Please add the ability to farm specific brands during weekly invasions

Since every week there is a rotation for the invasions, please rotate specific brand gears also along with the invasions and all invaded missions. This gives a chance to overcome the terrible RNG that's killing this game. The black Tusk are very financially strong faction, so it makes sense they bring specific brand sets to the city when they invade.

Weekly invasions adds a specific brand of gear each week during the invasions.