I posted a question on StackOverflow but unfortunately without any reply. Could you guys please take a quick look at this end recommend something? I have a feeling there's more people looking for a similar, clear answer which I haven't been able to find anywhere so your input would be very much appreciated!

https://stackoverflow.com/questions/58989517/whats-the-recommended-approach-for-building-a-complete-data-frame-feature-valu

Best
Konrad