Hello! I have just created a tool to create a title folder from a XCI file.
Hactool and your own Switch keys (all of them) are required.
Hope this is useful for you.
https://github.com/javilobo8/XCI2TitleConverter
Releases:
1.0.0
Initial release
1.1.0
Add NPDM patching (thanks to @Falo...