I've been carring around this question for a while and this video is the perfect example: Why are the special runs not "pre-order", meaning you announce doing a special color, then people can order the bodys with the spec they want and you can built the "needed amount" and spray them all in one batch?
Yes, this will mean some long waiting times, but if you want a guitar in a special color, you'll have to wait with any manufacutrer.
That's not a terrible idea, but after discussing it we've decided against it.
One reason is because we would be taking people's money up front and then sitting on it for an undetermined amount of time, which seems unfair. And no matter how many disclaimers you put out there people will still get antsy when their money has been spent for six months and they still don't have a body. Then our CSR's start getting calls, people start posting on soc med that Warmoth stole their money, etc, etc, etc.
Also, it works better for us to do these batches at our leisure, for example when the volume of orders in the shop is low or the necessary resources become available. Committing to build a run after X number of orders locks us into to having to do a batch at a fixed time, more or less.
Lastly, it keeps us out of trouble when something goes wrong. For example: you have 20 amazing Spalt Maple lam tops. So you take pre-orders for 20 bodies. During production, one top gets ruined somehow (not that unusual for Spalt Maple). Now, after having locked their money up for months you have to tell one customer they will get nothing, which will mostly likely make them unhappy. OTOH, if we build them at our leisure and something goes wrong, well, now we just release 19 bodies and we don't have any pissed off customers.
There are other reasons too, but I think those are the main ones. In a nutshell: we do these in the way that fits most seamlessly into our normal production flow, and makes for the most positive customer experience.