Here is the major difference compared to the current version.

– It was set in a day and far more brighter

– A had four trains instead of three, The A1 had an additional train. The Ivy area was more open and You could see the A site all the way from tunnels and vice versa like the old train

– It also had Heaven, which has been completely removed in the current version.

– There was no longdog. Instead, it used the old popdog with the ladder.

– B site was also more faithful to CSGO. The upper B view was not blocked off ( by adding a room in catwalk ) from the old head-shot position

Since Train has been removed from the pool, and Valve usually reworks maps when that happens, do you think they should bring back some of these elements to improve the current version?