Can confirm that what I want is Inbox's UI. The ease of postponing items into the "Snoozed" queue, and low-effort addition of task items, are both lacking from the stock GMail app.

I just checked and you can actually set swipe left to snooze in the gmail app now.

It’s not available in the iOS app.

Not surprising, developing new features for iOS isn't Google's highest priority, they're targeting where most of the installed userbase is.

Similar effects can be seen in the OTT market. Roku gets new features from Sling, Netflix and the other OTT players first, with Chromecast and Fire TV lagging by months or years, and these 2nd tier players are missing Amazon Prime Video (Chromecast) or YouTube (Fire TV) respectively. It seems much like the music sales market IMO...

Heh, HN is great at downvoting without making a counterargument :P

The first is available in gmail :)