Without doubt, tables are essential for pkm, because so useful to store detail data, perfect for diagrams, addresses, formulas, etc
Tables are portable and a very basic need to deal with data
I agree with the previous voices in this thread, an extra section is a first idea but not the best implementation.
My wish would be a gui wrapper for tables, examples are :
- notion like tables obsolete
- database folder plugin
Most of my time i use advanced tables, which is not a gui, but how table editing should work out-of-the-box