Data source/medium
To serve as a good replacement for GA4, it would be nice if there could be a report for oa source and medium. This would make it easier to see where the traffic is coming from.
If you can then combine all the reports, you can do nice analyses without using GA4.

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Rutger van den Brule commented
It's nice to see how much traffic you have on the website. To better manage campaigns, it is even better to see where the traffic is coming from what is the source of the traffic, what is the medium and possibly what is the campaign.
If you can then combine this information with revenue, website visits etc, you might be able to move towards dropping GA4 and going into Shopware Analytics.
Use for analytics of what happens on your site and how people get there then becomes easier.