Digital minis I can understand (I guess)... After all, there's already a market out there for tokens/etc and such for digital gaming tables. But randomised?
I already have a big problem with -physical- randomised minis (although the secondary market from that has led to some way cheap "group-finds"... you say Commons, I say Plentiful Cheap Session Fodder).
Well, from what I've seen it does not appear (so far) that the minis will only be available as random packs. I strongly suspect that the only reason we're seeing any mention whatsoever of random minis (not that I'd put it past WotC to spring it on 4e gamers, but I doubt they'd announce it beforehand) is that there is a rather vocal contingent of D&D Miniatures players (ie: the non-RPG skirmish game) who are worried what the 4dvent of the new edition will mean for "their game".
WotC already has had some level of success with the M:tG Online, so I'd suspect that they would want to do the same thing with DDM, but it really seems like they probably have too much on their e-plate at the moment... Gleemax, the DI, online Dragon and Dungeon magazines, etc... I wonder how much of it will actually be available for the big 4e rollout...
My heart is black, and my lips are cold
Cities on flame with rock and roll
Three thousand guitars they seem to cry
My ears will melt, and then my eyes
~ Blue yster Cult