Thank you guys for all the answers.
I really can not see why is this "smart object feature" so difficult to implement, especially because it is very important part of any design process and it really puts AF way down in comparison to PS from a designer standpoint.
I think that this feature "is a must" and if they do not solve this problem soon, they will lose many new customers, including me, unfortunately!
The reason why I even tried AF is because after last windows update my PS literally stopped working and it crashed every single time I start it, but I expect that problem will be solved soon so I have to use AF for now and I like it, but without smart object feature I simply can not do my work properly and that is a big problem for me!
I would really like to see AF winning, but for now, that is not a case!