The UK example is easy to cite, but one has to keep in mind that the allowed countries (eg EU) all have the same length of stay requirements. What you are proposing do not.

Also, knowing Thailand, stamps and paperwork is never going away, so for instance, my passport has 30 day visa waiver but I also have an LTR visa - how would you make sure I get admitted on the latter rather than the former? - I perfectly know that tech wise it is easy to fix, but I would still be very hesitant to use anything but a manned desk to enter, to be honest.