So most people on this thread seem to agree that in a nonrandom model, WotC probably wouldn't make very many obscure minis. And I'm not seeing many calls for WotC to individually package the valuable rares.
Many people do, however, seem to think WotC can and should create theme packs based around common minis, like orcs or skeletons. Although it's counter-intuitive, this is just as problematic as releasing rare minis individually.
A common such as an orc or skeleton, on its own, isn't particuarly valuable, as compared to a rare (say, a beholder). (And by "valuable," I mean both "worth more money" and "perceived as being a cool, desirable, boss-monster type at the gaming table.")
But a group of commons, together, really are comparable--as is evidenced by how many people here claim to want such groups. Take away the desire to collect a bunch of orcs, and you undermine the value of a randomized booster just as much as if you take away the desire to collect a single beholder.
And again, the problems that I outlined in my earlier post remain just as valid. How many of these common packs should WotC introduce? A pack of orcs? Skeletons? Adventurers? How about goblins? Kobolds?
Follow this path and WotC either has to: A) produce just one or two products, which would make a couple people on this thread happy but simply further piss off those guys who want nonrandom commons but didn't get the ones they want, or B) produce a handful--or a bunch--of products, and run into all the distribution problems I talked about before.
If WotC produced, say, ten different common assortments over the next year, how many would your local store carry? If they ordered the wrong amount (or their distributor did, or WotC did), how much dead product would be introduced into the channel, to increase prices or run the risk of a glut? How much demand would there be here on the ENworld boards for WotC to make it 15 sets next year?
At the end of the day, it doesn't matter what your non-random products are. Even collections of commons have the capacity to screw up a system that currently delivers minis to us gamers very, very efficiently.