While this is a bit less of a problem in multiplayer as many events select the range of cars to choose from.
In single player, having to scroll through 200+ cars over and over is really frustrating.
A simple option to tag cars with a small number of options could help sort through our cars with much easy.
Possibly something as simple as a radial menu that allows the player to pick “favorite, race, sport, rally, tuned” etc, that we could later pick from in the sorting section.
I wouldn’t anticipate any changes to the system in Forza Horizon 2. Perhaps we’ll get some sort of proper garage management system with Forza Motorsport 6 and beyond.