Still need to get me one of the new mules - currently using a standard one as part of a small 'go off and survey/salvage on the edge of space' fleet - An Apogee, two drovers (Each with four of the artillery swarmers. No really, it's still hilarious), a phaeton, a mule, and two salvage rigs. Alternatively, 'come fight my survey cruiser and also six billion missiles'. But swapping out a few missiles for a drone wing and surveying equipment would be a good tradeup, even with the higher crew req.