Exporting large lists to Excel (255 chars / #lookup columns limitation)

We have a large library in SP2013.
This library has...

- fields with over 255 characters (type: text, multivalue managed metadata, ...)

- over 9 lookup fields

 
Our users have a requirement to have an excel report (at regular intervals) of all the documents with a selection of the metadata.

We are able to export the library to Excel (2016), but it is truncating fields at 255 characters.

I am looking for a way to bypass this limitation.
I tried querying the library from Excel and PowerBI using the following data connection types:
- SharePoint list

- oData feed

For both methods, the configuration dialog fails after selecting the library from the navigator with message:
Datasource.Error: SharePoint: Request failed: The remote server returned an error (500) Internal Server Error. (The query cannot be completed because the number of lookup columns it contains exceeds the lookup column treshold enforced by the administrator).

We don't want to increase the lookup column treshold as it does not seem to be a good practice.

Any ideas on how to realize this export?