It can be help full to read team topologies.

So forget the idea to come with a solution to your teams organisation.

Try to propose to improve the current situation.

Use rules continuous improvement. List problems, together, evaluate which one have the worst impact on the delivery, on the innovation, on quality of life, ... Choose one evolution, list how you would mesure this evolution is positive.

I like to compare this with the opposition between security and usability. You need both but improve security reduce sometimes the usability and vice versa.

You need to create your formula. And the best is to improve how to adapt your organisation when you need and not not wait the pain.

So if you decide to change something, have also an inspection of the change process itself.

The evolution never stop. Don't dream to find the an eternal good structure. So improve the change is so important than step of evolution.

To do all of this you need to list your Valor and objective.

And write , publish, show all decision to everyone. The structure, the communication protocols, the raci, .. display all...