Hi reading-card,
Let me add one suggestion; perhaps it will lead to some ideas on your side.
Here, I first create a Loft with some splines. The Edge Tag is already set up with the Splines that shape it.
Those Spline will work as Fields for the one extra step.
Object Manager> Object> Current State To Object
This automatically gets the specific Edge Tag with the Splines, and a double click on the tag will select the edges close to it.
Here is a screen capture, 20 seconds.
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_Clips_DRS/20240223_Store_Selection_Symmetry_drs.mp4
The file
CV4_2024_drs_24_MOsp_21.c4d
The Subdivision might be better done during render time.
So, why not use the Splines from the Loft in the first place? Perhaps it is easier to get a single object instead of all splines used in the Loft, and it is easier to switch them on or off in the Field of the Edge Tag.
More as a brainstorming contribution:
Screen Shot 2024-02-23 at 10.30.42 PM.jpg
CV4_2024_drs_24_MOsp_11.c4d
Cheers