That bleedingcool article was all opinion - no facts.
I really don't think the value will drop because its not like more first prints are going to magically come to market.
EDIT:
republishing Miracleman is a good thing.
That book is like the greatest read of all time and more comics need to be like it.
A dip in value, maybe. a crash, no. The Flex Mentallo mini doesn't sell for what it did prior to the hardback collection ( which can now be found for under $10), but still gets a decent amount on ebay.
I was selling FM 1s for $60 and up at one point.