After upgrading to a nano saber I find myself more vulnerable to larger groups of mobs. (Mostly skeleton archers)
Part A: Allow the nano saber to block like vanilla swords.
PartB: Due to right click being used for activation and deactivation currently I propse a button change.
I would suggest "Shift+Right click" for activation/deactivation similar to the electric wrench.
Do to the nano saber being a carry over from IC1, which was before the sword blocking feature, I beleve that it has merely been overlooked.
If this is intended as a balancing factor for the increased power and durability over vanilla tools my apology.