The Vault -- V2

About:
It occurred to me that my previous vault design was awful. It was very space inefficient and clunky, so I decided to streamline it. This new design has modular storage units; with some simple worldedit, you can expand it infinitely (to the limits of redstone). The new design is very space saving and the unit comes prebuilt with 10 vaults--as said, it can be infinitely expanded.

A video would be much appreciated :)

Features:
- Compact, modular design
- Simple mechanism
- Auto-resetting
- EXPANDABLE
- 10 vaults
- Fast!
- Efficient!
- Improved!
- Impressive!

Usage:
Credit is not needed, just don't claim it as your own.

Questions/Comments/Requests:
Feedback is greatly appreciated. Hope you guys enjoy it and find it inspirational or helpful.