Got a really good question on discord that I wanted to share with you.
The question was regarding how to turn it into a cross mesh instead of just a plane. This is really easy (1 new node) so I figured I'd share it with you.
First for tidyness sake, you move the line down by half its length, like this:
Then you drop in a "Copy and Transform" node and tell it to rotate every copy by 360/numberofcopies*2.
Don't forget to expose the number of copies to the HDA so you can tweak it in Unreal.
And then you go into the sweepnode and set the cycle type to One Primitive at a time:
Another fun setting to expose is the twist, found on the sweep node. That allows you to make cool, twirling meshes: