I thought it is a good idea to handle the main things in a global lua file. There are some game variables and some tables.
Actually I am working on this project https://forum.defold.com/t/abandoned-force-top-view-strategy-game/8200/21 and there I have tables for units, structures, weapons etc.
If I spawn anything (using the factory) I have to give the new GO all his values. Of cause I could do that in the attached script, but I thought handling it by a global lua gives me more possabilities. For example access to (standard-) values of any of that table.