Yeah, with the Shard version, picketing gets easier, but as you pointed out the resource is limited. Also, I'd probably go back to your % health values (which reduce the number of hops by 1) since you always want them to die anyway. So a Mark V nets you 6 pickets. Note though that if you are trying to scout a lot of space, you will double-up pickets on AI systems if your Scouts need to travel the same path, so you actually get diminishing returns for doing massive scouting, but really good returns for tactically scouting small branches.