Ok just to make sure I understand:
1. Normally, per Characteristics under Shield Cover in section 4 (s4), “Shield Cover increases the target dice armour level by one from Unprotected to Protected, or Protected to Fully Armoured“.
2. However in this case Shield Cover is given to bases that already have Fully Armoured so get no benefit under the rules as written.
3. A special errata will therefore be introduced for this list where the Shield Cover benefit replaces s4 in the Shield Cover Characteristiscs to note it instead provides a benefit of reducing the shooting dice by a further step down.
4. I presume the rest of the Shield Cover sections remains the same.
5. Again presume Shield Cover used with a special exception errata rather than Pavise (despite Pavise being specifically mentioned as the kit) so the unit doesn’t receive the +1 in charge combat bonus?