So, I am so happy with your Builder Block, very intuitive but powerful. I have a suggestion: What about a Block (maybe called "Material Provider") that can to connect to various storage systems:

• RFTools (ofc) (1.7.10+)
• EnderIO (no real storage system, but...) (1.7.10+)
• EZStorage (1.9+)
• Correlated Potentialistics (1.9+)
• Refined Storage (1.9+)
• AppliedEnergistics2 (1.7.10, afaik being worked on for 1.9+)
• LogisticsPipes (1.7.10)

This "Material Provider" would enable the Builder to pull a specific item (specified in its GUI) from the storage system (maybe even trying to autocraft them) and use it as its building material. Additionally, for the sake of simplicity, the builder could also dump its quarried stuff in the Material Provider if you use a quarry shape card.

I might implement something like this but more general and not only useful for the builder. Just a way to export items from a storage system through the scanner