What I'd like to see (and apologizies to those who have a huge DDM collection) is for WOTC to produce commonly used, bulk monsters as cardstock tokens (using the same production as Dungeon Tiles) and sell nicer miniatures of special monsters as prepainted plastics.
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The counters could be bundled as a counter set for each adventure with all of the cardstock counters needed (and maybe even full color poster maps for ALL of the encounters). That would be sold separately from the adventure itself, so those with plenty of minis or some other mapping system wouldn't pay more for it, and so those who didn't want the adventure, but could use full color battle maps and counters could snag it too. You could also create counter bundles around monster types, or heroic/paragon/epic tiers, or MM1, MM2, etc.
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I just think separating their products into two brackets (the less expensive and less impressive counters, where you buy a lot of stuff even if you don't need it and the more expensive, but less (or entirely non-) random miniatures, which are of a higher quality) would serve them well, as well as the consumer.