ChristiaanJ: But the altimeter is a bad example, with the old "hours-minutes-seconds" clock scale (you know what I mean) not being all that fast and easy to read, and being implicated in several incidents (I don't remember accidents off-hand). Which is why the numerical 'drum' scale was added, even before we went to 'glass'.
The
addition of the 'drum' scale to a single pointer was a good thing. But that is where the improvement should have stopped. Removal of the 'last' pointer completely degraded the 'altitude trend situational awareness'. Especially on a rough ride...
ChristiaanJ: Unfortunately, with the conversion to 'glass', just about all the moving pointers disappeared.
So, to close the circle again, for the removal of the 'trend situational awareness' the trend vector was 'invented'... euhh...? Which 'as such' is a nice
additional feature to have... Not as a replacement...