Should not (or has) the relative crappiness of NTSC been relegated to history ?That pretty much has already happened. The things that made NTSC really bad mostly had to do with the way in which color was added to the B&W standard. The old joke was the NTSC stood for Never The Same Color.

The interlaced part of NTSC (and PAL) was carried over to some of the HD standards (1080i) because it still solves a major technical challenge: how to achieve both high definition and fluid motion without exceeding the capacity of the delivery mechanism (disc or streaming) and the cost of the technology required to display the picture at a price that the average consumer can afford.

Most modern displays can display pretty much any resolution (with scaling, of course) and pretty much any frame rate. Sadly, few can actually provide native interlaced display (for reasons that I still don't understand), although most have good enough built-in deinterlacers that it really doesn't matter to most consumers.