I still play in Sim 1 and have found a lot of new profitable routes. Deleting all the airlines that haven't been active for a few weeks would be a good idea.
The last few 727-100s in the fleet were replaced by 732s, L-188s, and DC-9-40s. The fleet of L-1011s has grown as we expand long-haul flights. The A300B4 has also been introduced to the fleet. V8 will order the new versions of the L-1011 for more long-haul expansion. The replacement of L-188s might begin soon if the Bombardier 330 is successful at making profits. The TPA hub will be closed soon since it is now longer needed and most (or all) routes from TPA have been saturated. DUS and LGW continue to be a successful hub.