I have exactly the same problem as the OP.
And it makes the Sync GUI so messy, it it becomes a pain to use.
An option to locally give new names to the synced folder would go a long way.
That way we could sort the folders by something like this.
- My documents
- My DCIM
- Spouse documents
- Spuse DCIM
- etc
But sure, grouping in addition to renaming would be superb.
Much wanted