The reason is simple. With randomized minis, they're catering to a general need to have monster mins. If they went non-random, each set would have to cater to the need for each particular type of monster it displayed.I still don't get why they still stick with this "Common/Uncommon/Rare" nonsense since they moved DDM from being a collectible minis game to just a minis set for D&D. That and there seems to be a slew of repeat figures in this set, again. Another Marilith, Drider, Nightwalker and Vampire?
There's no way WotC could win in such a situation. They'd be lambasted for cranking out tons of goblins and orcs. If they didn't give us iconic monsters like mind flayers, fans would scream "where's the mind flayers??? why a million orcs and goblins, but no mind flayers???" Then they put out a set with mind flayers and it sells miserably because it turns out their customers decided they aren't going to have mind flayer encounters often enough to justify they purchase, or they didn't like the other monsters packed in with the mind flayer, or some other utterly inevitable point of failure..
Nope. Forget it. Terrible idea. Just meet the need to have monsters in general. The people who can't stand that can eBay the specific minis they want. And the people who find that an unacceptable solution can be filed under "impossible to please".
Last edited: