[Feature request] - support 'on-demand' FSx scratch?

After struggling a little with NFS bandwidth issues with EFS/EBS scratch space for larger clusters, FSx has been working like a dream. Is there any concept however of only mounting FSx to the compute node(s) and having it be deleted when no compute nodes are running (maybe with its own [longer] timeout)? I wouldn't mind waiting a little longer for compute nodes to come up (if pcluster was also creating a new FSx) as a compromise to vastly reduced monthly costs for bursty workloads. Currently creating/deleting entire clusters as a spend-thrift workaround is a little unwieldy.

Also, I love the new SLURM queues - super intuitive and functions well - awesome work, thank you!