I don't know. I had no problem with quartermasters. In fact, mine are all green. It's the diagnostic engineer
that I couldn't find on the exchange. I finally got one in a trade. One thing I think the devs needs to make
a little more clear: usable enemy faction doffs from unusable ones. The difference in color border is subtle and the background is difficult to distinguish. I accidentally bought a few Gorn and Klingon KDF doffs thinking i could use them, but couldn't. I do have several Orion, Gorn and Klingon doffs that are usable (ie. Starfleet), so it's not a matter of a avoiding the purchase of a specific species. Either make the different factions more distinguishable or flag them as unusable for the buyers faction. Just my two cents.
Both my Fed and KDF chars on Tribble are SADLY UNDERSTAFFED in the medical department. My Fed has a blue councelor and my KDF has a green medic and a green EMH and that is with purchasing maybe 3 or 4 packs on each. I do have 3 bartenders on my KDF and 2 of the same entertainer.
But yeah I have no quartermasters on either, in facr, I only have 1 Trader period, and that's because I bought him from the DOff store with a Tier 1 engineering token.