I was surprised that a player went to an International Tournament with written notes on lines to play. And some players did not have up to date database for competitor analysis.
In todays field and in an International Arena, I think having chessbase with the requisite database is a bare minimum.
Only Roshan had remote support. Once he finishes a game, he keys it in and sends it back to Peter. So in this day and age there may be less need for the trainer to accompany the player.
If we can arrange to have that type of technical support, I think it will be a small step forward. The trainer can also look into the next round pairing and give the same sort of heads up to the player.
This system is less than perfect but at least its a small step forward and one that we can implement almost immediately.