If you use Zone System only for capturing as much of subject brightness (scene) as possible on the film, you could just skip Zone System and use BTZS or similar. As there's no use for zones, just the the both ends of the (zone) scale.

Where is visualization which should be core of Zone System as I understand?

As for print having always 11 zones.. I don't agree with that.

If I have subject, say caucasian people and some important shadows. The skin is usually at VI. My visualization may differ, but if in this case I place important shadows to III. The skin fall's to V which is too low.
If there's not any important highlights, I can expose and develop by using N+2 and I will have negative which (in theory) is easy to print grade 2 paper so that shadows are detailed and rich, the skin has right value. Highlights may require some burning, depending on situation.
That print doesn't have 11 zones.