Εrgonomy of the arrows in facets: could they stay open as long as we proceed, once we open them?

[Hippodamie]

Dear Magdalena,

it is wonderful! I begin to use it more!
Congratulations!
A question I already asked:
could we please, when we move the arrows in the facets (for example looking for Constituants and Functions, and sometimes clicking on All), could we please stay with the arrow open, I mean not be obliged to move again the arrow to come back to the previous step of the Search among Constituants or Functions? The same for Suffixes and all arrows in facets.
= Could the arrow not close once we have open it?

Thank you for that too.
You will tell when you/we are ready to announce the opening. Where will you announce it yourself?
With all best wishes,
Sophie