Top notch work of the helixes on your route Imagineer. Love it, very outstanding.
Question for you Mr Imagineer you know the stairs in one of your screenshots you modelled that?
I look forward to seeing more of the exciting inspirational shots on your route so produce more work in the making.
Particularly; I am more thrilled to that interest of the helix structure it amplifies the hobby fun and prosperity in a route.
The cons situation to that is you can’t place signals with the track type you used for building the helix otherwise it’ll just float with no support and it ruins the realism. That’s a compromise in which I observed in one of the images.
If the track type you use for the helix structure as for default track for example just ensure that your helix structure do compatibilise on using other track types (to adapt on and match). It may also be considered vital to place signals onto some compatible track if the user chooses not to have the willingness to put it on the girder supports probably mainly for clear visibility of signal indication from the view of a cab.
OPTIONAL ALTERNATIVE:
You could reproduce this by having a wide track bed as the base with the suitable track in which the trackside object can then be placed onto it preventing it from floating.
Girders could also accomplish the placement of signals since they’re supportive enough and clear sufficient widening on any section of the helix.
Cheerios,
Ranciderwrich