A few comments:
1. AEA and SAG-AFTRA have no more idea when theatres will reopen than the League or the state or any of us have.
2. Things do not happen on a dime, and many of these potential projects will already be contracted and sold well before the pandemic "ends." A run out period will be necessary.
3. These issues have little if any relevance to commercial theatre as they relate to things being undertaken by non-profits.