The cast and crew clearly admire the director, but are optimistic about the final product that Whedon is working on as well.
In fact, Aquaman actor Jason Momoa threw a chair across the stage in excitement after he saw the new footage for Justice League for the first time.
Most major Hollywood productions feature some sort of reshoots to help assess the status of the film in post production and fill in the gaps that principal photography left.
Snyder himself wished the cast and crew luck at the convention on Twitter yesterday.