Supply/Cargo control: buy/sell supplies for corporations in bulk, or for "Space Trade" (Golden Rainbow)

Another option for "Group Management of corporations", would be "bulk supply changes". With this option, a CEO could increase/decrease supply level of selected corporation(s) to X months supplies. And, if combined with "group management", it would be possible to change all supply levels for one corporation type.

For example: "Increase supply levels for [Gasoline corporation group] to [18] months supplies."

This would prevent changing every supply individually (buy/sell Air Transport, then buy/sell Aluminum, etc...), and instead it would summarily change the supply level for all.

(see "Enterprise groups" for related suggestions for CEO management of corporations)

Space Trade option:

This feature could also be very useful, perhaps critical, to "saving or economizing time, for space trade", where 10s or 100s of Cargo Shuttles c

I like the specific supply quality idea better.