[spidersouris]

For *ACL you'd have to justify your wish to change reviewers, though; and you need a good reason for that. I don't know how much reviewers changes for a resubmission are solely due to reviewers' unavailability but it seems unlikely all three of them got removed from the reviewer pool.

[canjobear]

Before ARR existed you could just send the paper in again and get new reviews.