First of all: told you so. One entire bugsmasher ep was just CIG showing they hadn't figured this out yet.
Second of all: uh no, actually in-sequence messaging *adds overhead*, but it can be neccessary for consistency depending on your other design choices.
It's amazing. We are watching an entire company learn the basics of distributed systems.
Can't wait for them to discover Brewer's CAP Theorem....
It took them 5½ years to invent object-oriented programming. I'm sure Brewer's will probably be reached before 2025 at least. Progress!