I think this could work. Provided there were also class 3 and 4 mining lasers available.
Also, the ridiculous drain and heat of normal mining lasers would need to be reduced. Otherwise, actually having a mining laser on a mining ship would make it worse for mining.
Also, the ridiculous drain and heat of normal mining lasers would need to be reduced. Otherwise, actually having a mining laser on a mining ship would make it worse for mining.