so its basically a free unit generator, isn't that slightly Brocken?



I would add a few drawbacks





1, the blightling can be attacked buy other enemy craft while its attached to its host craft but not by the host craft itself, its stuned while the blight is attached. but at a trad of any damaged done to the blightling will be shared with the host. so this would be able to take out or damage larger enemy mega ships, the carrier , Tempest, mother ship, battle ship, brood lords



2. once a unit is fully infected the blightling ability to infect is put on a cool down and is just a weak but fast air melee unit.



3. infected ships instead of spawning a blighting, will spawn something called a blighting drone, which is the same a brightling in all respects save that its got a limite life span say about 1 mimint and they take double damage.



this is so its not totally Brocken, as could you imagin a swam of blighlings attacking an other swam of blightlings. it would be chaos and what if one or more got into were you or your enemy are keeping all your over lords, it would be devastating.



I wuld add one ability though, pick up.



this would be a blightling picking up a small enemy unit, zerging, marine, zelot, worker ECt and taking them into the air and doing damage to them.