To be honest, Hollywood; even with low GSAT for TWDA has more experience and reason to why they can sustain permanent walk through attractions (House of Horrors, Van Helsing, and more come to mind). Orlando? No.
Not to mention, I believe someone may of mentioned of the armory of blanks from T2 expanding for the replacement. And to be honest, I have to doubt that a permanent walk thru attraction will need blanks.