I think it would be interesting to have such environmental effects kick in that are tied to the characteristics of that specific pocket. If both ships have the same fit, it will come down to how good a player will deal with the additional pressure of environmental effects - if ships are fitted differently, one will have a higher advantage the longer the fight goes on - if both ships are fitted poorly, they will both suffer from disadvantages, thus it comes down to handling the pressure properly once more.
Either way, it should speed up the entire process which is fair imho. No need to hang out max time imho. Also adds the additional risk factor if ships are fitted to out-tank. Abyssal PvP should be quick and dirty and extremely risky. For everything else we have regular PvP.