[PvK]

You can combine "don't get hurt" with "target nearest".

Unfortunately, I think "don't get hurt" always means "break formation," and is always done by all unarmed ships anyway. If they have at least one weapon then you can put them in a fleet with escorts, and asign them a leader position in a formation that puts escorts in good position to stop assailants. The problem is then this formation will try to fight, rather than hiding out. However you can design escort ships with weapons and "don't get hurt" movement strategy, and hope they go to the same corners as the ships you want to protect.

Wormhole beams don't care what the target size is.

PvK