So, I ended up backing Reaper Miniatures' latest Kickstarter. I actually made the decision a little over a week ago, but I kept up with the updates to see if Reaper came up with something to change my mind. In the end, I stuck it out - a $1.00 pledge, a few add-ons, and a little bit of sales tax (since Reaper and I are in the same state).
In the end, I just didn't want to be stuck with miniatures I didn't have a need for. While there were individual pieces in the Core Set and each Expansion Set that caught my eye, there were many that would end up as clutter. And I have enough gaming-related clutter to deal with as it is. Besides, it's not like this Kickstarter will be the only way to get the pieces I liked. They'll hit the shelves in a year or so. In the meantime, I've got a backlog to work through.