I've still got quite a ways to go on the next round of packs, but I've got the basics down.
Most of the aircraft have been given sounds, so what's the next step? Making sure they all work correctly with extensive flight testing. Think of it as quality control, as flight testing shows whether or not engine sounds loop properly (sadly, my audio editors don't always do the job), if flaps and gear sounds are of the right length, and if gun sounds fit with the particular gun's rate of fire. And for this series of packs, I've decided to up the realism even more and make the internal recordings the default sounds, with the external ones as switch-in/switch-out files.
I was hoping to have some packs out last week, but since I'm such a perfectionist, I couldn't let the little annoyances slide. But, it'll be worth the wait.