I love miniatures. Enjoy painting them just right, doing conversions, and even a bit of sculpting.
I am in the minority - by a lot.
I think there is a demand for painted plastic figures. The sets seem relatively small to me. 80 unique monsters and you get the figures for less than a buck a piece retail.
It will be easy to accumulate a bunch of commons (orcs and the like) for relatively little money. Someone trying to get into the miniatures for little money could buy a few sets and sell off their rares and sought-after uncommons. If you did it early, you might even get the commons for free.
I will not use them, because machine painted just is not acceptable at my table. However, judging by the number of folks that use counters I think this is going to work.
I teach high school, and let me tell you the kids that play D&D are VERY pumped about these new figures. Right now they use a lot of Mage Knight stuff for their D&D sessions.
What worries me is the new
D&D Miniatures Handbook - I hope they are great mass combat rules, but I have my doubts. The authors really are great RPG guys, but I'm not convinced they get it when it comes to minis. I cannot wait to buy it and find out I'm wrong!
BTW - if you want to check out a really neat miniatures game that could be adapted for a great fantasy campaign check out
Piquet. I am not associated with this game-maker in anyway - I just think the rules are cool.