Is World Gen Required mainly structures and if so what ones are a must to make the mod work?

Thanks.

By default, worldgen is required for progression, yes.
However, you can work around that by removing/adding recipes through minetweaker/crafttweaker to work around the things that normally require worldgen.

The ones that are a must is that you either have desert or/and ancient shrines enabled.

To close this off: Anyone who comes across this post and has the same question:

As for 1.3.2 and prior: Worldgen is required to progress. You can work around it by adding recipes depending on the current structure/progression of your pack.
The things dependent on worldgen are:

• Resonating Wand (ideally 1x craft)
• Luminous Crafting Table (ideally 1x craft)
• Starmetal Ore (you'll require multiple; only for the 1st few ores. After that, the mod has options to work around the worldgen requirement by itself for this)
• Constellation Paper (you'll require multiple; found in loot chests, mainly in the structures' loot chests)

However, i suggest everyone that wants to work around worldgen that you play through the mod at least once to understand which feature/mechanic does what.

(And with that i'll mark this as resolved and close it)