In general, from all the missing "visible" values from weapons, the biggest one is the range of them, currently by how the ship pannel is design, it comfortly allows an extra displayed weapon stat just at the right of the Pierce.
Also ship turn ratio would be a very welcome addition below (or at the side) of ship speed
To not make this overwhelming to new players i would surely keep those stats to "advanced tooltips only"
I host multiplayer games very often, so those kind of questions about (does my X weapon shoot from more distance than yours? come all the time)