Yes, the Netherlands have.
With this release of all the medical helipads near and on Hospital rooftops its possible to have all the helicopter landing sites in the Netherlands.
Onshore and Offshore.
With thank to LPNils for his work and his permission to use some of his work.
I did a few helipads for the scenery gateway. However when I visited some of them in XP12 they were also floating. XP12 is definitely breaking them. Will need to resubmit.
True that helipads on buildings are quite hard to get right.