Squad depth is a beautiful thing. When you don't have it, you run the risk of running your players into the ground and lose them for the most important part of the season. When you do have it, you can survive small injury breaks and still maintain a high level even for difficult matches.
After six months of not having any of it, Barcelona can finally enjoy it. Jordi Alba, Jérémy Mathieu and possibly Lionel Messi will miss the next 7-10 days of action, a period that includes the Copa del Rey quarter-finals plus a huge match on the road.