I have small problem regarding item stack's.
Take this scenario,
I'm Going From Earth orbit Traveling to Mars orbit
-My weapon of choice is drones and I buy 100 heavy drones on Earth orbit
-When i reach Mars orbit they don't sell these drones on Mars station, so
I have to transport Drones from Earth orbit to Mars orbit
Problem now however is, my ship does not handle 100 heavy drones (because of payload/mass). However, I'm not able to brake the stack of drones, so i cannot choose how many drones i wanna put in my ship.
The only solution so far for this is to sell my drones, and buy less amount new ones.
Hope to see change for this in the future.