I find it so strange that people don't find the bundling useful, because to me it's mind-boggling powerful.
Being able to open a custom bundle of Git commits from yesterday, scan them, then archive them all in a single click is huge! Being able to click on a bundle created for my upcoming trip and see all my emails for that trip there (hotel, flights, etc...) is such a time saver. Then being able to snooze those bundles to another date/time is also huge.
I actually want them to expand it more, allow me to bundle multiple emails that I choose together! If I get 3 separate emails about something I need to do next week, I want to be able to make an ad-hoc bundle for those 3, then snooze them all to another time together.
I can absolutely see how it's not for everyone, and I don't want anyone to think i'm implying that it's wrong to not want it, but i'm just amazed that there is such a varied response to them!