[Idea] Parametric 3D Sketch with dimensions, constraints and curvature continuity

Creo lacks a true parametric 3D sketch. Today, creating controlled 3D curves requires datum points, projections, intersections or ISDX (Style), which is hard to control precisely.

Proposal:
- A 3D Sketch mode where each point is defined by three dimensions (X, Y, Z) relative to references.
- Switching the active sketch plane on the fly (e.g. with a hotkey) to dimension in depth before confirming a point.
- Full constraints in 3D: coincident, on-curve, on-surface, tangent, curvature, symmetric, snapping to existing curves, edges, axes and points.
- End conditions on splines: G0 / G1 / G2 (and G3 where possible) relative to curves and surfaces.
- Live curvature comb and reflection (zebra) analysis while editing.
- Fully parametric: dimensions editable, driven by relations, regenerating robustly.

Benefit:
Precise, dimension-driven styling curves and Boundary Blend networks inside the parametric environment, without leaving Creo for other surfacing tools.

This has been requested for over 10 years: the "3D Sketch" thread (23,000+ views) shows how many users need it, especially those coming from SolidWorks, where a 3D sketch is already available.

I'm using Creo Parametric 8.0.

Since the old Creo Parametric Ideas board now redirects here after the platform migration, could a moderator confirm this is the right place for product ideas, or move this post to the correct Ideas area so it can follow the review process (Acknowledged → Delivered) described in “Community Ideas and Product Managers”? Thank you.