I've been suggesting this over and over again for so long now. It's something that's really, really needed to be able to practice different maps. You can figure out new ideas on Dunes on your own, but not Fjords, Canyon, etc. What if I see a new path on Paritian Rumble that I want to use? If I try it out in a match, I could get velcroed and lose it for the team.
Anyways, most certainly yes. This is a necessity.