I'd be ok with that ... if anything was dropping for the Heavy Cruiser .... but its not. Seriously, everything that is coming my way is Battle Cruiser.
Then get yourself an Escort - anything that can be equipped on a Klingon Battle Crusier can be equipped on and escort - or Vendor/Put on the Exchange and get what you want. Yeah, the prices in general are a but outrageous, but if you're patient and look through all the pages of stuff you want - you'll eventually find a 'lowball' price. LT Cmdr. 15 and all MkIV gear of my choosing (and some in game research crafting) - picked up 4 or so items from the Exchange to get there. Kinda said in a way as I like my ship equpment so much, I doubt I find any further 'upgrades for the next 6 Levels/Grades.