One of the things I like most in AoS is getting up close to the enemy through digging or sneeking and then building a fort or bunker in their territory and try to hold that location for as long as possible.
I think it would be really beneficial if there was some way that groups of team-mates (squads) could work together in re-enforcing and defending a position through either 1. being able to spawn on your squad-mates or 2. being able to place a special block/item that enables team/squad-mates to spawn right there (instead of having to take the long and perilous walk back to your fort every time you die)
This would not only encourage more purposeful building and fighting, but enemies would also need to properly infiltrate/destroy enemy positions in order to clear them out of placeable spawn points or enemies