All valid points. However, we are where we are when it comes to (lack of) instruments scans and mode awareness in glass cockpits and until the design and/or training changes, that’s where we’re going to stay. Flight directors are not helping.
I don’t think there are any rules against making things easier if there are corresponding increases in safety and awareness. It’s all very well saying “pilots should...” and “constantly checked” and “know the systems” but we need to acknowledge the underlying reality that it is sometimes hard to keep the comprehension up at x-o’clock in the morning after long flight and a tiring run of duties. A little help goes a long way and it’s not a competition.