If not being in alphabetical order for someone else's collection is enough to cause such things I hope you never see my collection -- about 9 different consoles all jumbled up, no semblance of alphabetical order, series order, "genre" order or anything like that. The closest to any kind of order is when you might get the occasional grouping of "good"* games, though that is more likely a happy accident as those would be the ones I got out to play and then stuffed back into the box. Oh and N64 cardboard boxes rammed into another box (I will leave it as not done gently) as they take up way too much room. That said the games should be in their correct boxes, when they are in boxes of course.
Oh and stuff from even older devices stashed in old boxes, gym bags and whatever else all dotted around the place.
I wonder how many of those Wii U games will be hard to come by in the future.
As for the matter at hand other than being coy and saying PC (which does not count as I have not actually purchased a game that will not run on this system which means I am somewhere in the middle of the 360 era right now) I do not really see anything worth playing on the current set of consoles right now, therefore I have none and no collection for them.
*I try to only have good games, or games of some merit at least. I can not be dealing with "because it is rare" because that does not have the best correlation with quality.
Oh and if you want to see a collection take shape, albeit very much not of newer games, I can suggest the following youtube channel
https://www.youtube.com/user/BitHead1000
I know I suggested it in the youtube channels thread but I will go it again.