I think that lowpoly graphic and those shiny effect dont go very well togeather, i would recomend to switch to more carton look like "Train valley 2". And for the trailer, i would like to see some UI when loading train (like how much cargo it loaded), your game don't have that beautiful graphic that you can focus only on "cinematic" video. But music fit this video really well and those "cut" with train movin along the camera was cool !