As I'm sure many have already remarked, "I DON"T WANT CHROME!" That's all you're accomplishing here, the unmitigated homogenization of internet browsers.
I mean, Australis is a clear example of "change for change's sake." Whatever advantage is gained by the new interface is offset by far by the reduced functionality of Australis. And, yes, dear fanbois, it IS reduced functionality.
This reminds me of nothing so much as attempts to "improve" the "interface" of automobiles. It's been proven that driving car with something resembling a joystick is possible, but not at all desirable. Same thing for using tillers, accelerator levers, center-placed driver seats, etc~
Development needs to be about evolution with something like an internet browser; this is no place for wholesale off-the-wall changes.
My advice for using the Australis interface in the future--in ANY capacity is this: No. Just NO.