Okay, enough goofing around....
I'm happy to be able to say that I just learned that TFP is working on a 16.4 update with some pretty nice fixes. Not sure when it will be released but it was just recently added to the development branch and they are about two builds into it. So it appears there will be a bit more polish after all.
I have a wish dear TFP.
And i think your Worldbuilder have the same issue and so the same wish.
If you make a Prefab with a underground part you have a on/off toggle
Code:
<property name="CopyAirBlocks" value="False" />
False means you cant have airblocks, means no basement, no Bunkers, No caves Possible
True means you cant have the Vanilla Surface as Part of the Prefab and need for every kind of Biome a own Prefab if you dont want a Green Garden in Desert as example.
To solve this i wish a small Hotfix in 16.4
Code:
<block id="74" name="air prefab">
<property name="Material" value="air"/>
<property name="Shape" value="Invisible"/>
<property name="Texture" value="250"/>
</block>
Its simply a second airblock that will be copied/applied even with "CopyAirBlocks" value="False"
Made now only one test but looks like it works fine.
(I use this Block with Pilles Editor and the Replace Feature
https://7daystodie.com/forums/showthread.php?62501-Prefab-Editor-(Alpha)&p=625980&viewfull=1#post625980
Think it would be good to make undergreound Prefabs without the need of a XML Mod
Allows Prefabs like this (The Sand is from the Biome , in Snow it would be snow)