personally, unless its a brig, i see atlantean ships as free health packs for my ship. fighting the crew is hard i guess but sinking their ships is so easy (and its not like you really have to fight the crew)
sinking brigs is relatively easy too, but youll surely take some damage and maybe even more than youd heal so i prefer to avoid them. they are also too dangerous when your durability is so low that your mobility is crippled
i still dont know if brigs being in the insanity 1 layer is a bug or no. sure feels like it