It would be useful if Calculator wrench could be effective with other mods, like BC or EIO. Currently, the wrench implementation is so simple and purely supports only Calculator effects. It is not a bad thing, but could be tricky to expand functions.

For example, Buildcraft started to build own interface for wrenching at here (unreleased API as far as I know), EIO has only one useful special behavior, hiding conduit facades (here, I'm not pretty sure they implement additional wrenching effects through this).

In an ideal world, these functions could be used through the new capability system. Sadly, we aren't living in an ideal world...