Thanks for the Helix shoutout! We’re working on version 2 of the software and we now support the “organic” meshes without displaying the edges of each polygon within Revit. Ref: Visualization and Documentation of Organic 3D Warehouse Component in Revit - Helix - EvolveLAB Forum
Regarding, support beyond architectural elements, we started to support pipes and have a roadmap for supporting MEPS elements from SketchUp to Revit. This post might be relevant: Lab Live Takeaways: SketchUp to Revit and Back, Crossing The Model Drop Chasm with Helix - Helix - EvolveLAB Forum
Helix 2 is now in open beta, and available for a free trial download: https://www.evolvelab.io/software/helix