2 - Fix takeout not to be entirely broken and hostile to users on 2 axes: usability and reliability. Usability: emit photos once only with a separate json specifying group memberships. Like, you know, competent engineers. Because that's how they store it internally.
2a - Either (i) fix whatever brokenness in their system regularly causes zip downloads to fail; or (ii) figure out or build a reliable alternate solution. Forcing users to wait hours to a day or two to access zips that they can't download is nothing more than a symptom of total disdain for their users while checking a compliance checkbox.
(1) tech support that actually reads your messages and replies with a solution demonstrating comprehension of the message that you wrote. Amazing. I've emailed them twice and gotten a great response both times.
(2) it is the best UI I've seen outside gmail;
(3) They have continued actively developing their UI, with nice updates released perhaps in the last 6 weeks.
(4) keyboard shortcuts that work
(5) Instead of inbox 0, I practice inbox 50k and it handles it fine.
(6) I just had a decade-anniversary there and I've never regretted it.