An (optionally visible) grid and a "Snap to" feature, so the anally retentive type
2)
A bypass feature. If you just need modules ocasionallly, you have to "build around them". E.g. Alt-clicking could be used so the MIDI or Audio signal bypasses a part. Should also be visible (greyed out).
3)
Grouping/Folders, so you can quickly duplicate a set of connected modules.

