I would prefer they do not make NAT 1 an auto-failure with skill checks (same goes vice versa for NAT 20).
Alaways having a fixed 5% chance to either fail or succeed indepently of difficulty of the check is so non-sensical to me.
But as with a lot of suggestions / feedback regarding BG3: please Larian make it a toggle in the options menu.
As in my previous post, I think this is something we take for granted in Table Top that is adjudicated by a DM and common sense. You could emulate it with an (hidden?) "auto-succeed" and "auto-fail" DC.
A manual task with minimal hidden variables might never fail on a Nat 1 if your boni are = or > than the DC. Persuading someone you just met to do something when you don't know them might have a higher "auto-succeed."