I just put a WinExpert Vintner's Reserve kit into primary this past Sunday. It's a Pinot Blanc. It was very simple, but the directions (and everything else I've read) warn not to try to make the wine any stronger (dilute as directed) -- not sure if you could adjunct it with sugar/dextrose, good question.
Primary - California Common -finally!
Secondary - nothing, back after year plus hiatus
Keg carbing & conditioning - nada
Drinking - store bought: Loose Cannon IPA, Wachusett IPA.
On deck: Trying to decide (beer); wine kit likely (red wine)