(28 May 2014, 1:47 pm)AIG20 wrote I guess the main advantage is that it would decrease the chance of MAN ALX300s working on the 36, and MAN E300s working on the 38.
Wrong - that can happen regardless. One point to consider is the end of layovers at Park End and therefore end of a Trident or Olympian on there on school days (and end of a school working on the front of a 36 and end of a 36/38).