New construction: Which system to choose for roller shutter box? Any tips?

What is reasonable with regard to future repairs and from the perspective of thermal insulation?

Shutters :D

For focus on repairs - attachment.

For focus on soundproofing, thermal insulation - front construction

I have the impression that you would like everything prepared again specifically for you. Especially in connection with your other questions - how about reading something here and elsewhere first, and then asking targeted follow-up questions?

Other threads are partly outdated, hence the current question. In the technical field, there are known to be new insights repeatedly.

No, not really... especially with [Rollläden].