When creating a new project, the character already has a movement system implemented. The problem is that when holding down two keys on the same axis at the same time, the game always selects one direction. If you hold down all four keys at once, the player will always move right and back (135 degrees). This really irritates me. When pressing W and S (or A and D), or all four, the player must stand still. I can easily implement this with the outdated input system. But it’s already an outdated system. I’ve heard that switching between characters and vehicles is difficult with this method. When using the new system, all that remains is to remove the IMC responsible for controlling the character and add the IMC for the vehicle at the right moment.
The starter kits are very simplistic. They’re helpful to pick apart to figure out how the engine pieces are put together, but for anything “real,” I would recommend starting from a blank project and adding all the bits you need yourself.