Not me, because I wouldn't want to have to learn so many codexes all at once, even if I only picked up the codexes I would use. Besides, slowly over time means that I drift from one army to another, and I don't have to buy all the new upgrades at once either. I could still pattern things on my own, picking up what I wanted and when, yet at the same time, I might never have picked up the Necrons like I have with the starter set this time.