Don't expect much in this regard, Node Editor was developped at a time when C4D's Node Editor didn't exist and the only alternative was XPresso nodes, which Redshift was using by default up until very recently. It's using the new editor in S26.
Since then (v3), no much progress on this side. I guess devs are busy following as closely as possible Corona for Max development and in this regard, it's a success since we almost get every new release at the same time as 3ds Max users. But between this and fixing specific C4D bugs, I suspect that very little time remains for a Node Editor overhaul, especially to get at the same level as the C4D one which is now quite mature and pleasant to use.
And porting Corona shaders and materials to Cinema Nodes ? V-Ray 5 was introduced in December 2020, they've just released UVW nodes few weeks ago, just saying.
I am not sure the native node editor could do that:
It's possible now, this argument is no longer relevant. If you have access to S26 you can try the latest version of the Material Node Editor with the CPU version of Redshift, which is native to Cinema 4D now ( and very very slow right now )
But even if it wasn't working it would'nt be a big deal, I would gladly exchange it for the current nodal editor to get some nice features : solo node, nice viewport preview, native shader linking which doesn't f*ck up your materials with "Shared shaders" and duplicates of each material sub-tree, access to mapping context, and the ability to build node groups / reusable node assets.