r21 introduced a much enhanced multitouch trackpad support on Macs (if in previous versions it ever existed at all). It's much nicer, but... Not quite usable.
Look, to move viewport now you have to alt + two finger move, to zoom - alt + pinch, to orbit... alt + CLICK.
When you do something homogenous you quickly use to it and changing behaviour becomes a pain. Here we have to switch the way of operation (just moving fingers and clicking is vastly different here). It's inconsistent, forces to remember what you should do every time and makes a good concept not so nice at all.
I think that should be MUCH better, simply excellent if you wouldn't have to click - ALT should enter you into navigation mode, so you only need to move the finger.
I know there's a alt+RMB to select "throught" the object. But it's relatively rarely used (despite very handy) and can be re-assigned to another modifier key without a hassle.
MAXON, please, consider this. It would be wonderful!
And, I see Macs becoming a joke not really worth looking into anymore if you actually work, so I think the flee to PC will increase more and more. Windows precision driver allows good multitouch support on many different devices. Please, consider porting this principle into Windows version, I do ask.