fallen empires and megastructures

[mork77]

Did anything change for fallen empires in Banks and Utopia? Did they get new megastructures?

They had ringworlds before.

Is there a Dyson Sphere hidden somewhere? Or habitats?

 

[klingonadmiral]

No, except on random thing that might or might not be tied in with megastructures (saw it in an observer game, couldn't test it out)