Bring the advanced options into the sub-questions GUI.
Like the sub-question relevance field.

The attached screenshot shows an example of approached by a different web based survey-tool.

To exclude a sub-question from the random order you can click the red pin.
To active as default answer you can click a checkbox in front of a sub-question.
To add a other field behind the sub-question answer text you can add a predefined field from a drop-downfield.
The sub-question relevance is here behind the eye icon behind every sub-question.

The sub-question can be grouped and relevance and randomize/static can be applied to the subgroup of sub-questions as well.

The current technical debt of the codebase might prevent going in that direction. But the ticket seems to propose a bigger change to get rid of technical debt.

And : for order by TOKEN:ATTRIBUTE for example ?
Or order like ranking ?
etc ...

One day LS GmbH will start from scratch with a stripped down version of LS since complexity and technical debt got unbearable.

You started this ticket to discuss code change. I provided a small perspective from the GUI side.

Personally I would favor a Listobject for items/subquestions, which can be manipulated via EM. (Current EM codebase is the blackhole. Who will touch it?)

The dynamic and static lists would be able to contain order as well.
https://bugs.limesurvey.org/view.php?id=11688

SortByLabel ()
SortByValue ()
SortByTokenAttribute ()
SortReverse ()

Order by TOKEN:ATTRIBUTE is this feature request?
https://bugs.limesurvey.org/view.php?id=7498

Good catch for 07498 :)

About SortBy function, i'm sure we have a Feature Request about 'arrtay management by EM' :)

Here, it's more a SortBy([1,2,6,-oth-,3]) for example .

But : the system must do

• A request on answers/subquestioon : same for all respondent
• Reorder the request after.

Maybe better by plugins , this fix https://www.limesurvey.org/forum/can-i-do-this-with-limesurvey/118384-same-randomization-order-for-following-questions#184389