Re: Permanently keeping the 1MB (anti-spam) restriction is a great idea ...
There is no realistic scenario where a network capped permanently at 1MB can have meaningful adoption whilst still maintaining direct access to the blockchain by individuals.
there is no realistic scenario where plastic card with 1960 chip on it can have meaningfull adoption.
Wait ... mmmmmh ?
Actually the analogy would be to limit the credit card industry to the mainstream data processing technology of the 1940's namely tabulating machines and punch cards. The pre-dates 1) Integrated circuits, 2) Transistors, and 3) The use of vacuum tubes in computers.
Edit: The credit card number would be copied by hand for each transaction.