I hear you loud and clear OP, my EWR-SAN flight tommorrow was 9 empties since Weds finally they gave 3 UPs today Im still waiting but having paid $138 base fare I can complain but not too loudly.
At 1st I garbbed the middle in the exit row, late Fri an aisle opened. Now the 2 people on both sides of where I was in the middle are no longer there , I take it there went 2 of the 3 UPs but they were booked before me.
No way would I any longer book a trip on CO expecting anything but the coach seat I chose! And wait till all the newly minted Plats due to the 2x EQM thingy come aboard. An EUA will be but a DREAM or something spoken about at a DO under"Remember When"