''Now we'll need to convince Zeiss to resurrect the brand ''
I would hope so but as far as in practice, it will takes many years before you can see the resurrection of Contax. Look at the resurrection of Zeiss Ikon. In truth, it happened many years after the termination of production, what they resurrected is actually more of a Leica M.
Is my C-Y gears irreplacable ? I have 11 lenses and 4 bodies. I am keeping them becauses I liked them, but I do believe in terms of performance, they could be replaced quite easily. What is the point of their resurrection ?
Although the Canon people might think my C-Y 21 2.8 is irreplacable, to me I can get better performance with medium format. You might think my C-Y 28 2 is irreplacable, because it is 28 with f2. I could replace it with Leica M28 f2. The other candidate is the new ZF 25 2.8 which can focus even closer. I don't have C-Y 55 1.2, but I should believe ZF 50 1.4 is very good.
The one difficult to replace is C-Y 60 2.8. Can you replace it with Leica R60 2.8 ? I would say no. Can you replace it with NF50 f2? The answer is no. Can you replace it with Hassy 110 f2 ? I would think it is too big. This lens has a size and taste difficult to replace by the others. I had very nice portraits shoots from this lens.
What about C-Y 85 1.2 ? There are many other lenses having very good performance with different tastes like Leica R or M90 2 ASPH, ZM85 2, ZF 85 1.4.
Can my 100 2.8 Makro-Planar be replaced by the new ZF 100 2 Makro-Planar ? Not in clinical applications when the former is able to do 1:1.
What about my 200 f2. Even though Sony is producing a Zeiss 135 1.8, I don't think it can replace my 200 f2 easily. I heard that Leica 180 2 is better, but Leica can't replace a Zeiss.
Could Canon EF-S 60 2.8 replace Makro-Planar 60 2.8 on a Canon 350D ? The former has excellent optical performance, auto-focus and automatic aperture. The answer is no. The Canon manual focus is never as smooth as the Zeiss and Leica counterpart. When you are shooting small objects, smooth focusing is very important. The Canon manual focus has a frictional feel. In fact, I tried one day to ease the focusing a bit by droping oil into the canon lens. Well, I ruined it. The one and only one Canon lens has gone from me.
People like me would wish to see the resurrection of Contax, but I doubt if there are enough of us to make this worthwhile. What happens if the Leica factory got bombed one day by terrorist, resurrection will happen straight away. That's the difference between Contax and Leica. Contax is like an orphan.