Currently, /home and /data/project are shared across all instances of the design project, allowing files to be shared easily across instances. This however, comes at a cost of less reliability - your instances are unavailable during NFS outages (this is the most unreliable part of all of labs), home directory access is slower, etc.
Additionally, there's /data/scratch which is a labs-wide shared space, and /public/mounts which is a public readonly mount of wikimedia data dumps (which maybe you would find useful?)
Ideally, I'd love to get rid of all of them - your project gets more stable, Yuvi gets happier, win-win!