@DiaAzul I fully agree that KNIME will have to weight how much packages would be there in a ‘standard’ environment and which packages are left to experienced users that can (quite easily) configure their own settings with the help of the Conda Environment Propagation (which again might slightly differ between operating systems). With Python the management of dependencies is always a challenge.
I wanted to offer a few packages that I have in mind, specifically OpenPyxl since questions about additional Excel file manipulation come up in the forum quite often.
So packages might be chosen for the extension of critical functions (Excel, file formats, Graphics, Time Series, Machine Learning) and offer at least one option own all these fields preferably the most common one and leave out exotic examples and ones that are not well maintained.