Wow, I am getting more dizzy from reading you than from a driving a roundabout at high speed. More opinion-changes
1) removable digi back and thus easily scalable to new sensor generations
If you have a backup body but no backup back, then you have a minor point (Good Point #0.5). If you have a backup body and back, you are back on par with the S2. The Phase cameras are pretty much given away with their new backs, so you will almost certainly get a new camera with every new generation of back anyway.
2) larger sensor size and more state of the art sensors (DALSA)
You may prefer larger sensors. Personally, I would take better image quality any day. Let's see how this one works out in real life.
Dalsa sensors are not better than Kodak sensors, but are just as good, with different people preferring different looks (and both sensors are able to deliver different looks, as evidenced by Leaf vs. Sinar, and Phase vs. Hasselblad). The main difference is that Phase backs can make long exposure times with the Kodak, but not the Dalsa sensor. Again, let's wait and see how the image quality works out.
3) first time leaf and shutter speed lenses in this size of MF (sorry I do still not consider Leica S2 to be a MF camera)
The "Medium" in "Medium Format" refers to cameras which lie between small format (Kleinbild, or 35mm) and large format (4x5, 8x10, ...). I think you mean something else with this.
4) new lenses from Schneider coming - for me at least equally good and great as Leica lenses, especially their new designs (and yes I know that there are some other opinions here
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Since you have never seen, used, or seen results from a Leica S lens, you are not basing this opinion on knowledge, but on something else.
5) The rest you can get very excellent Mamiya glass
Your point eludes me. "Schneiders are as good as Leicas, and Mamiyas too"? I know few people who would make statements like that, even fans of Mamiya and Schneider. A few focal lengths might be as good, but probably not more. Let's wait and see which ones. My guess: the Mamiya 150mm D, and the Schneider 110mm. The rest not. Just a guess.
You cannot use the Schneider tech camera lenses as your basis of expectation, btw., unless you plan to compare the S2 to tech cameras. Those lenses have very different constraints, and are often symmetrical designs, something not possible for more than one focal length with a bayonet mount.
6) New camera much faster
Bravo Phase, the new camera is faster than the old (slow) camera. :clap:
Let's wait and see how it compares to the S2, shall we?
7) best flash sync in town - although I personally could not care less for that feature as mainly landscape photographer, but I understand that many are excited about this
Let's wait and see it get delivered, and work. I am sceptical, beyond the 1/800s, but let's see. I am willing to be pleasantly surprised.
8) most flexible system as backs are easily usable with view cameras
Good point #1.5. How many people make use of this is another matter, but for those few people, it is a point.
9) C1Pro - consider this still the best RAW PPSW together with PS CS4 after looking in the latest and greatest LR version and also Phocus
Let's judge by *final* results, shall we? You may be right, but I don't expect Leica to take this one lying down.
Peter, let's wait and see how it works out when all the products are out. Making dramatic statements at this point is only likely to get one egg on the face. Why do you so often rush to make strong statements when there is no knowledge to back them up in many cases?
Personally, I have high hopes for the S2, even if acquiring one is the subject only of my dreams. Still, I think that if Hasselblad's new focus system works, if the new Phase body is really a major step up, and the Schneider lenses are as good as you hope, and if the S2 is a resounding success, then these three together have the potential to actually *grow* the digital MF market, which would be positive all around. As long as the market is so small, it is in danger of disappearing, which would be an awful shame. I hope for the success of all the above systems, not just the one I would buy if I were thinking of doing so.