I'm not suppressing your opinion at all. In fact, you successfully stated it twice. I'm simply saying that existing square returns are obviously overstated. If a portion of the square contains an echo, the whole square gets painted. By smoothing the edges of a square where the echo changes direction, a more realistic pattern emerges. If that also makes it "pretty", then the "pretty" is nothing more than a bonus. Roughly speaking, we're talking about the difference of maybe a couple of acres max, even when the smoothing is totally wrong. Misrepresenting a few acres on a 5 minute old echo is acceptable to me, especially when the majority of the echo becomes more realistic. I fly through a lot of these smaller echoes and can tell you they are almost never depicted correctly anyway. A VFR friend flew through a few miles of yellow returns the other day and never hit a drop of rain. I experience that quite a bit with green echoes. For the sake of this "accuracy vs pretty" argument, I think you and others are putting far too much faith in the fact that the echo is accurate to begin with. Having ADS-B radar is for spotting trends, not spot accuracy. And that's my opinion, subject to be repeated.