Crystal movement speed should probably be tied to how many people are pushing it. In other words, apply the mechanics for checkpoints to the entire map. Say 2 people to move the crystal at the current (standard) pace, with each additional person adding an extra 5% speed. Right now, there is literally no reason to ever have more than one person touching the crystal at a time unless you're worried about the other team trying to steal it from you. Nor do you ever want more than 1 person holding the crystal in place outside of OT. Making crystal movement more granular would open up additional tactical options, which is something CC is going to need sooner rather than later.