I’ve purchased the 2.0 core set, the Xwing, Ywing, tie fighter, tie advanced, and slave I expansions. Out of all of these purchases I’ve only received 1 proton torpedo upgrade. What gives? If I fly two Xwings and a Y wing, only one of the three ships can carry proton torpedos? I’m pretty sure I quickly emassed several proton torpedo upgrades right off the bat in 1.0....back before I sold it. Why are we getting so few upgrade cards with each expansion?

Find someone at your LGS who bought conversion kits. If they got all 3 then they have lots of cards in excess of what they will use. Alternatively, eBay.