Understanding recipes through use case example

[MagicJF]

Suppose I want to use MWS multiuser feature to create a game like this:

To win the game players must surpass the longest strike of correctly answered questions, and a Victory Tiddler reflects the in place ranking.

Content of "Victory Tiddler":

• Leader= John, strike of 10 correctly answered flashcards.
• Second= Sofia, strike of 7....
• Third= Jeff....

This implies the creation of a shared bag with read and write permissions (it's propuse is to habilitate a place for communications to be established) "communications bag", because each user needs to populate its maximum strike in a place others can read and update the "Victory Tiddler" acordingly.

Is it true that this shared bag must always be the top bag?

Suppose now that John want to personalize its UI without affecting the UI of the other players.

If a new bag "John's skins bag" is created and put on top of the "communications bag", then when John correctly answers a question, the tiddler that accounts for the strike is stored in the "John's skins bag" instead of the "communications bag" therefore the strike update is invisible to other players..

#Is there a mechanism that allows to overpass the default schema and write in a bag that is not the top one?

How would you solve an use case like this one?

Thanks!

Edit:
You can create 2*n recipes for n users, like this:

• John's game recipe = "comunications bag" (the topmost) + "John skins bag". This generates the wiki used by John to play the game.

• John's skin recipe = "John skins bag". This is used by John to customize John's game UI.

• Sofia's game recipe = "comunications bag" (the topmost) + "Sofia skins bag". This generates the wiki used by Sofia to play the game.

• Sofia's skin recipe = "Sofia skins bag". This is used by Sofia to customize Sofia's game UI.

• And so on...