IMO there's a gap between "charge every day" and "charge once a week" that needs to be crossed.

In other words, if they made the battery last twice as long it'd still be equally as annoying (since your daily routine would be nearly the same, except now you also need to remember if it's a charge day or non-charge day).

To be fair maybe 3/4 days buys you some convenience. But anyways charging once a day is a reasonable place to get to, to get something better would require at minimum a 3x improvement which probably means a ground-up rework instead of continuous refinement.

A battery band might get you there but I suspect it'd be too clunky. At best Apple may redesign their watch to support a battery band and allow 3rd parties to make them for folks that need weeks of battery life.

For me, it comes down to two things. First, I do not want to have to charge every night since I use my watch as a silent vibrating alarm, and I track my sleep. It seems like Apple has basically overcome this hurdle, now that you can charge while you shower and basically get by.

The other issue is that I don't want to have to bring Yet Another Dongle™ every time I go away for a weekend or short business trip. Most of my trips are ≤ 4 days, so if AWs could reliably go that long (including battery degradation over time) then I'd consider getting one.

Right now, only the AWU even approaches this, and only in low-power mode. If it weren't a thousand dollars, I'd consider it. But between the low-power requirement and the pricing, it's just no contest in my book. I'm getting a new Pebble, which offers a month of battery life at 1/3 of the cost.