Good point about the consequences of more space resulting in more trips and more landings.
I am not convinced that more space is a cure-all. Bigger escape windows, along the lines of 225, 189 and 175, are likely to be beneficial in any sinking or inversion. When I think about the chaos of all those guys struggling with kit and looking for exits, there may be cases where more space would be unhelpful if it provides somewhere to get lost in a panic.
O&G is clearly an important market to manufacturers in a certain range of aircraft size and it is also the most challenging for emergency escape. Ideally, there needs to be a logical approach to cabin design at an early stage that provides for any passenger a single logical approach to getting out. The fewer deviations from a single logical approach that there are the more people will survive.
Pet hate: 332 door jettison regime.