Absolutely. Even without the federations it's already a huge step.
You can have mints of various sizes and action radius managed by Uncle Jims. And then for you, as a client, it's just yet-another-custodian where you can drop part of your hot funds. No sense in storing your life savings in a cashu mint ran by some random internet guy, just like with Wallet of Satoshi. But beer money? Why not.