Hi I am new here and I have some good ideas on what new types of coasters to add to your game that would work out good

  1. At six flags great america they have a ride called X flight which has and intresting type of coaster which would work really good with the mecanics in your game. 
  2. you should a free fly coaster like the joker and x2. It is where the carts spin.

Winged coaster