All valid points, just because there is complexity that doesn't mean the average person has to deal with it. In fact that's what the Arduino idea is founded on.
It will be interesting to see how some things go, for example explaining to beginners how some analogWrite() commands produce a square wave and others an analogue voltage. This is where bad choices for function names eventually bites you in the arse. And if you differentiate between a "normal" analogue output and a DAC output what do you call the new functions, realAnalogWrite() 
There is the occasional push for "advanced" documentation that doesn't gloss over the hard bits, maybe this will be an opportunity for a bright young lad.
One thing using a 3X will do is squash the constant "generate a random number" threads, it has a TRNG.
Rob