Searched and surprised to not find a discussion on this:
Team Update 2015-02-03
The higher seeded ALLIANCE will always be assigned to the Red side of the FIELD. Additionally, ALLIANCE CAPTAINS will always be assigned to the center PLAYER STATION, the first pick will be assigned to the station to their left while they’re facing the FIELD, and the second pick will be assigned to their right while they’re facing the FIELD. If a BACKUP TEAM is in play, they will be assigned to the PLAYER STATION that was assigned to the DRIVE TEAM they’re replacing.
In past games, the 1,3 (left,right) positions weren't as differentiated as they are this year. Also, I think their placement varied between Playoff (Elimination) matches.
The 3rd (right) position has a higher potential for drive team vision issues as totes accumulate on the platforms nearest the driver stations. Which they may for yes, chute door, loaders.
The 1st (left) position has the best view of the "aisle" between the stacks. for negotiating the "traffic" between the stacks.
Am I overthinking this?