I looked at some of your recent posts. It appears you did buy a mini, and were not making up the usual trollish negative stuff that comes in when Apple releases something new. So apologies for one accusation, but my other criticism applies.
The thing is, you say you "thoroughly enjoyed" the mini, but you still returned it. You say you're familiar with the retina screens from the other three device categories, but you still bought it.
I still find it shocking that people will stick others with the results of just a bad decision on their part, and blithely return a valuable thing that has been opened, handled and basically ruined as a new device. Yes, I'm old fashioned, at least in this area of values. I try to keep up in other areas.
Perhaps my expectations of the display were too high. I assumed the reduction is size would make the pixels less obvious but could not see past it. The size, weight, and portability of the Mini were great and as some have said I think it could replace the larger iPad for me.
I have to admit I never considered a returned product ruined as a new device. I find it easier to purchase online and use it in real life situations as the Apple Store is often too crowded and riddled with adolescents to get much objective use. You do however, make a good point.