Partial Locking - constrain objects from moving off their CPlane

Hi, sorry for pestering you about it again, but in the context of the new Constraints feature in Rhino 8 could you suggest by any chance any possibly new way that objects could be constrained in Rhino, such as snapped to their CPlane or locked on one of their axes?

I’ve started another thread about it here, before I realised that there was a similar request here already.