Please add some in game way to find out what, if any, skills or attributes softcap items constructed with a Build Sign. This information is displayed for all crafted items (Thank You, J + L!) but is missing for built items. For example, but not limited to, cauldrons, ovens, and ore smelters. In Legacy Haven, this information was displayed by Enders' client from a side file in the client folder which was rarely, if ever, updated. It would stay more accurate if J + L added it rather than as a client mod. This would a great place to display "Q doesn't matter" for those few items that it applies to.
I suggest displaying this info on the bottom right corner of the build sign.