The moment they do this is the moment hundreds of Sennheiser enthusiasts will declare them a dead firm.

They are basically one of two big firms still interested (afaik) in the dynamic driver headphone, and IMO if they just add another flagship planar to the market, no one really gains anything. It being their first planar would mean it likely wouldn’t be very good, so they likely wouldn’t gain many customers. They’d lose some “market share” of dynamic driver lovers to Focal, and consumers would lose big because then the DD market is literally just Focal, and their build and product support is terrible.