fvtt-data-toolbox VS tables

Even presuming that an existing import tool (like Data Toolbox) is sufficient for your exact re-import needs and thus work wouldn't need to be done there, building a reliable exporter is unlikely to be substantially easier than just building a tool that does what you're after purely in Foundry.

I've never tested it, but maybe you can do it with the Data Toolbox module and a xml to csv converter.

You can use Data Toolbox module to input data into a compendium from CSV.

"In order to use the service with the TC assets, you need to sign up for the Moulinette Patreon at the Dwarf Miner Tier ($2/mo) https://www.patreon.com/moulinette as well as being at the Adventurer+ (5$) tier on my Patreon."

Available to Moulinette Patreons at the Dwarf Minor Tier ($2/mo) https://www.patreon.com/moulinette

For resources on pushing tables further, see: - https://github.com/foundry-vtt-community/tables, the community tables that probably have some good examples of nested tables. - https://foundryvtt.com/packages/tablesmith-like is a module to bring tablesmith-like capabilities to foundry (which is a pretty strong rollable-tables thingie/app). This is pretty cool, but bear in mind if this module ever goes unmaintained (as I believe its precedessor "Better Rolltables" did), then you're likely to lose all your tables... and it sounds like you put a lot of work into them. So I'd be nervous about that. - Or you could break out of Foundry and use tablesmith directly: http://www.mythosa.net/p/tablesmith.html, and just copy the text it generates into Foundry.

There's this page scraper (which is a little bit naughty) https://github.com/foundry-vtt-community/tables/blob/main/useful_scripts/chartopia_extractor.js

Did you mind if i add these to the https://github.com/foundry-vtt-community/tables community project ?

Foundry Community Tables

There are also some fun tables out there. https://github.com/foundry-vtt-community/tables/tree/main/independent_tables I'm partial a few of them

And this has some community tables: https://github.com/foundry-vtt-community/tables

The Foundry Community Tables module has a bunch of roll tables with random stuff from various circumstances. Definitely worth checking out.