I’m not a big fan of PVP and if I wanted PVP to die I think pausing every single time the teams are ever so slightly off-balance would be on a list of things I would suggest
I just think the gates shouldn’t open until both teams have shown up. In the wee hours of the morning, the only BG a level 70 will ever get is Seething Shore. 9 out of 10 times neither team is full. When one team is full or almost full, the other is only half or less full. So usually they open the gates and the game ends because of not enough players.