I wonder if it will feel significant.
I can't remember being limited by the controller battery.
The runtime on a single charge is probably still going to be measured in weeks, and at that scale I feel like it doesn't really matter.
It's because they're basically already using user replaceable batteries, to the point I'm not sure what the SKU revision will actually do. My best guess is they won't be gluing the battery down any more? Otherwise there's not anything I can see they would need to change.
At least if you're a heavy gamer like that you can pop a new battery in quickly when the old dies, instead of getting tethered with a cumbersome cable.
does it matter for coach gaming if I can have spare batteries and just swap them. That's honestly sounds better then increased life with only cable recharge