For example, what if I wanted to make two sets of "zero pip" pyramids?
That's a lot of pyramids any way you cut it. I'm actually excited about the treehouse sets for this very purpose--it'll be much *cheaper* to outfit an entire stash-based icehouse set with 0 pip versions--just two treehouse sets is enough to extend 5 solid stashes to 5 nests of 4 sizes each, with one in each color to spare for mess-ups!
(Hrm, an extra set of volcano caps would even enable me to do that for my grey stash...)
And best of all, none of that is going out of print! -Dale