I think that's the key to this even being viable (from a business standpoint) is being able to have the commitment of all the people buying ALL the figures... that assures that it's simplified ordering, shipping and record keeping...] instead of having different numbers for each figure, and a staff keeping track of who ordered how many of what.
As it is, you only have one list and one quantity... and it's a quantity that's high enough to be realistic approaching a factory to manufacture... and to still have it affordable to us... and leave them making a little money, too.
Sadly, you break that formula, and it's no longer good for ANY party in the equation.
A subscription party is about the only option for seeing these fan favorites like Scourge, Slipstream, Beast Wars characters...
TFCC Subscription Bots for sale: TFCC exclusives Slipstream, Breakdown, Jackpot, Circuit. Will ship international.