I feel the same as Gabbet. I donot think just changing cases will hurt the value. After all you are collecting the silverstrike, not the case. Except for the strikes with the colored cases. I change all my strikes to new cases.
I have been doing this changing of cases. Since I started collecting silverstrikes.
Of course there just might be a person, out there. WHO JUST HAS TO HAVE the big cases. But, I think these are very few, if any.
Dan