I really dont understand why, with the implementation of storage on probes, that the space dock wont rebuild them. the space dock should rebuild ALL ships (including sats imo) and it shouldnt be hard to do.
Theorically you have a point but do that sats and probes can be rebuild like defences may be too much.
Everyone will choice sats instead of fusion and probes instead of other ships to farm.
If you want to farm fast with probes you have to take its counter-part, the thing that they are not rebuilded if someone get you.
Same if you want to do sats instead of fusion.