Drones are economically viable when you have a mass production industry going to produce all of your frequently needed blocks, and you roughly use the same blocks on your ships. However, unlike the negigible credit costs before, it now requires crafting of alot of weapon computers per firepower (since, lets say every single 100 mass drone needs 3 computers + faction module + bobby AI). I have not enough practical experience with the new system to evaluate if the constant need to produce computers can be a nuisance.
However, another problem for very small groups right now is that large ships are not affordable (because of the danger of loss), and it requires fairly large ships to draw advantages from drone technology, since drones need a certain count to have the swarm effect kick in. This is even more true of anti missile drones*.
*BTW I ran some tests on anti missile drones. Tiny tiny drones with a dual barrel 100% cannon/cannon. They are far less effective than I originally thought (might just have been the test, but well) :/ The problem is that good PD turret arrays work by having alot of close turrets firing nearly directly at the incoming missile, while any orthogonal hitting shot will very likely miss the missile. Drones, being spread out quite some after a short while, will not be able to provide the local density of PD turrets. They serve more of a "chaff" purpose though, as they can very well "consume" one wave of heatseakers or player fired guided torpedoes (causing them to overheat), which is especially valuable against nukes (preventing an effect on the mothership), and their erratic firing-everywhere will draw the anger of a good number of AI opponents (turrets) as long as they are alive.
keptick how is the status quo on skoomdrone launcher tubes? I might get around to testing a multi-fire design today, if it even works in the slightest.