I craft hard for a couple weeks after the big patches. Being the first on a server with the new shiny stuff is extraordinarily lucrative. Granted, I was paying 1m apiece for glass fibers with 3.3, but making 5-10m per sale after expenses. As soon as big new gear items have their prices driven down by competition I switch to furniture and glamour for awhile. When that market gets saturated I focus on raiding and doing crafts for my FC until the next patch (or just hanging out with my wifey)