The Crusher Drive makes the AI use it in a sort of suicidal way. It's basically "Target the enemy with this system and try to point the ship at it while it's active"

there's one super simple idea for you using vanilla+tahlan weapons. Just tell it to eliminate other frigates or destroyers
Alternatively use it with medium-range strike weapons and give it 3-4 DLMG instead of literally 5 of them. Like idk, 2 railguns, 3 DLMG, then ~700 range ballistic mediums, ideally HE.