I think BuildCraft lacks a way to store its power. Usually people can use Thermo Expansion's energy cells to store power, but I think BuildCraft deserves it's own energy storage system. It would make BuildCraft a more complete mod in my opinion, and there's no need to say how useful it would be.

Does anyone agree with me?

The buildcraft power is not intended to be stored.
Being able to store and count every single MJ would just turn it into a clone of IC2 power, and then we might as well use IC2 power.

Use energy loops.

Use Thermal Expansion or Ender IO

I know mods that support energy storage. I just thought BuildCraft deserved its own.
But Krapht has a point.