2 - This is the worst: if you invest just enough points in Str to wear plate armour and 12 Str Shields, let's say 11 + 2 from items. If you get attacked by weak status your str is reduced by 2 and you automaticaly unequip your shield and armour. This is a huge disadvantage because you will not only be defenceless for the time it takes to remove weakness but you''l also spend 1 or 2 rounds equipping yourself again.
Are you sure about that? If so, it's a change.
Getting your stats lowered to the point that some of your inventory becomes un-equippable doesn't (or originally didn't) cause the items to unequip back into your inventory; they just become hidden in the slot and will reappear there once you met the requirements again.