>> mass optimization, they're released at below operational altitude Literally everything to do with spaceflight is connected to mass optimization. The more p

>> mass optimization, they're released at below operational altitude Literally everything to do with spaceflight is connected to mass optimization. The more practical reason is to better separate the sats within the orbital plane. They sit in the lower/faster orbit until in position and the last in trail boosts into the higher/slower orbit. Put them all into the final orbit and they would all be bunched up. Put them too high and you are just wasting fuel springing them back down.