Alox, the workaround I have found so far is to manually input into Alphanumeric - P01, P02, P03, P04 - and set revisions by sheet. This doesn't solve anything related to internal versioning (P01.01. P01.02) but can be used for the initial sharing.
In addition, moving to 'published' (C01, C02, C03) requires another workaround. You could possibly use a parameter on the titlesheet to move between P issues and C issues but then you have to be careful about regulating the revisions on the sheet. All the above is a nightmare for document controlling!
I think the BS ISO document does a good job of explaining how the process works and I would hope it wouldn't be too much trouble for Revit to implement as it is only text and nothing relating to graphics.