ok, thank you all for your replies.

Both sides have good arguments, that’s why I was posting this, many of the argument came up as well when arguing with myself.

Counting the posts/upvotes, split config files seem to be the most popular choice or is it just because of they were the oldest and had time to collect more upvotes? Questions after questions :)

Thanks and cheers

Grumpy

As it is a more theoretical question or a question for the next time I need this, making config file(s) read-only and giving guidelines on how to structure the config values is possible. good points. Applies to all possible solutions 1-4 ;)