Someone mentioned Mass Battles:
There are Mass Battle rules in the Miniatures Handbook. As far as I have heard, they aren't too popular (the usual comment is that those rules aren't that good).
People are requesting new rules here and there (and I think there was a lengthy post over at Wizards about it, with one of the big DDM people posting lots of stuff about it).
I recently had an idea of a new Minis Handbook Boxed Set, which would contain a new Minis Handbook (with all minis content, no D&D stuff in it) and some gimmicks, like 4 d20 (one for each faction, in the faction colour), Dungeon Tile quailty counters for all the scenarios therein, some maps, and so on.
The book would have new mass battle rules (as well as rules for aquatic fights, Minis campaigns, Single-player scenarios, a HeroQuest style Dungeon Crawl, Multi-Player fights with maps for those, and others.
All I know is that a lot of regulars liked the Idea quite a lot. I don't know if Wizards will pick the idea up, but that may bring new Mass Battle Rules.
brehobit said:
Here's my business plan.
Sell, for about $50.00 a collection of about 80 commons and uncommons
That's a metric ton of minis for a huge sum of money. I think if you want to sell those for those who don't want to blow too much money on minis, you'll have to make them a lot smaller and cheaper!
Plus, the larger the packs, the higher the chance that each individual will find that too many figures are not to its liking and avoid buying it.
Sell mainly via mail-order (don't expect too many game stores to stock this).
As far as I know, Wizards is very protective of Brick and Mortar Stores. Very, very protective. I doubt they'd do anything like this.
Some collections:
Humanoid baddies (say 10 of 1 orc, 10 of 1 goblin, 10 of 1 kobold, some groups of 5, and a few singles, the unique might be just a "cool" orc or perhaps something a bit more "special")
"Yeah, well, but I don't care for kobolds - they suck, even if you have a thousand - but I'd need 30 orcs for that one mass battle. Does that mean I'll have to blow 150 on three of these packs?"
And that's beyond the general problems these packs would have, as said above by Charles.