But when I still drove a manual it always felt like I was planning ahead, engine braking early at red lights (which often meant I could coast though it without completely stopping) etc, which you can't do with the lesser control on an automatic. Driving "lazily" in a manual means reducing shifting which often translates to more fuel-efficient driving. Driving lazily in an automatic is very different.

I'd love to see a study on hypermiling with auto vs manual in real-world condition. AFAIK all the efficiency numbers we have are just based on purely mechanical tests on a driving cycle on a dynamometer, and we all know what that kind of testing leads to.

Sure you can.

It's one the of the reasons the ZF8 transmission is used in everything from the new BMW 8 series down to the Dodge Charger.

Unless something has changed radically in the last few years, that's just not true. The torque converter will drop out of lock-up as soon as you demand sufficient acceleration (this will vary tremendously by engine - i.e. an inline four will do it regularly, a big V8 may meet most of your acceleration needs without dropping out of lockup) or tap the brakes. Torque converter with lockup have been around since 1950ish.

Having spent a decent amount of time with ZF8 speed the torque converter is almost always locked out. Throttle response and engine braking don't lie.

Edit: by the way, I looked up the ZF8 and it's available in a bunch of configurations. One of them is a wet clutch instead of a torque converter, which I imagine has to operate like an electronically controlled manual transmission. There's even an option to have an electric motor instead of a torque converter for hybridization!