I would like to see more Provisions/Shield Generators/ Medical Supplies dropped. I don't want to have to turn down the mission just because I don't have the required item, nor do I want to spend credits to purchace them.
You can replicate them. They cost peanuts. Besides, energy credits are largely worthless unless you are an exchange junkie.
The Exchange is so Handy though for finding those weapons the vendors don't sell like back in the old days when marks only got you mk x antiproton weapons I relied upon the exchange to get Phaser Dual Heavy Cannons Mk X, of course back then the phaser proc was awesome and frequently dropped shields, though I could be misremembering it as better then it was.