Sorry if this offends or seems controversial, but I can't help but surmise that people considering buying the S20 don't really need a 'Note' device anyway.
For me, in my daily life, the 'S Pen' is indispensable. No matter the features offered by any other device, without the 'S Pen', it's just not complete.
Signing and translating documents, editing media, and even typing, with my large stubby fingers, are much more efficient on a 'Note', resulting in higher productivity.
The S20/+/Ultra, whilst very good devices, on paper at least, just can't cut it for me.
So, no thanks, will wait for the Note 20?, but even then, it would probably need to incorporate all under screen sensors. So, maybe no update till the Note 21.