After the initial ticket deal, each player may discard their starting tickets once and draw a fresh set, which they must then keep to the usual minimum. Softens an opening hand of three impossible routes.
Does your table play this?
Keep three destination tickets face up beside the deck. A player taking the draw-tickets action still draws three in total and still keeps at least one, but may take any of the three from the face-up market instead of blind from the deck. Refill the market at the end of that turn. The same number of tickets enters the game; you simply get to see some of what you are choosing between.
Uncompleted destination tickets cost half their value, rounded up, instead of the full amount. Encourages ambitious ticket draws late in the game.