I played now a bit with the icloud photo library and here is what i found out.
Regarding the post before that the photo management with IOS and OSX is complicated. At least i do not know any platform or solution which makes it easier. My actual setup: we have 2 iphones, 1 ipad and a Macbook. Up to now i use the, of course, foto stream to synch the photos between our devices. On the Mac i use Aperture to have structurized mediathek. And from the Mac it gets backuped via TimeMachine to a networed attached storage (NAS). Really everything is automized and i do not have to do anything. And to get this running you also nearly need to do nothing......it just works out of the box. In my opinion this is far away from comlicated. I cannot imagine that it could be easier or more comfortable......how??
But back to icloud photo library. I tried it with 1 iphone and activated the photo library. Additional to that i also kept the Photo stream activated on that iphone. The result -> you get the photos to the new icloud photo library and additional to that, if you take new photos, you also get them - via the still activated "old" photo stream - synchronized to all other devices for which the photo library has not been activated.
Also on my Mac i get the new photos via Aperture/old photo stream.
Means, theoretically one could use the new icloud photo library on the IOS devices and on the Mac you still get all photos to Aperture (or IPhoto, makes no difference) to archive and organize them.
However the web platform beta.icloud.com to view the photos in the icloud photo library is nothing to organize the new photos in projects or folders or however you would like to organize your photos. You just get them like on the IOS device in an "All photos" folder and you can view them grouped by "Moments". But thats it. I think to really use the icloud photo library we have to wait for the comming fotos app for OSX. With this i hope everything can be organized like it is possible in Aperture or IPhoto.
Until then i will not use the icloud photo library.
One additional thing. Even if you use the option just to keep an optimized version of a photo on the IOS device (and not the original one) after a while - if you have a huge mediathek - there will be a lot of data on your IOS device. As it looks right now it takes around 10-15% space on the IOS device. However, if you have 10GB of fotos and videos in your icloud photo library you need around 1-1,5GB on your IOS device. Not that much, but my mediathek for example grows every year around 20-30GB (yes, we make tons of photos). I just imagine, after 2 or 3 years i have nearly 100GB in the photo libraray which means around 10-15GB on the IOS device. Everytime you get a new IOS device all this data will be downloaded to it........and whats after 5 or 10 years???
I hope there will be a solution to define, how far back the photos should be synchronized to all devices. At least i do not need 3 year old photos on all my devices.......
Does one know if there is already a solution planned for this??