What th... holy crap...

I would never have the patience to arrange things in that manners of precisions... I don't try to put everything into my collection house, but just special miscellaneous stuff and other intriguing doodads.
But I haven't even started on the other two houses yet (including the family house), maybe I should test my patience and give that a try... Meanwhile, I don't like it so much that you put your stuff in the basemant, because you would have to go all the way down there to take a gander at your collection... know what I mean?

Braggen has stuff all over most of his houses, I have not actually finished any house yet though, the enthusiasm for the new ones died a bit when everything came back and upset my first goes at house decorating. The only thing in that basemant that required patience was the redwater skooma and Surilie Brothers wine bottles, both of which were easy once you got them upright, everything else was easy and usually seemed to jump into the right place almost by itself. The wine bottles up the top only required patience because I am lousy at judging distance. But I have arranged the different sized wine bottles in a number of houses, so am slowly getting better at it. That was the first shelf big enough to put them all on though. Once you get used to starting out with most things being upside down, it is a lot easier now than previously to arrange things.
There are still the odd things you have to toss in place because the will not stay (Stormcloak officers helmet, and a few others like that) and a few things that wobble, some stuff especially the helmets will still not display on the mannequins and some weapons still fall through the display cases or do not sit properly on weapon racks and plaques. But I personally think the actual movement system has improved. With the latest improvement you can certainly have every potion on display, you just need to fence those rectangular shaped fat ones in to prevent them falling over. Probably a main game house would be better since we get free reign on what goes where in them. But a cellar could be claimed for potions if you leave stuff out to get all the shelving, you could leave the smelter and forge out and put in baskets and kettles for alchemy ingredients.
The cellar is handy because it has a shorter loading screen than the front door, and nothing is going to attack you going down to the cellar. Drop your stuff and rush off to the cellar, or do it the other way if you are doing the cellar. I usually do both at the same time. Also handy for farming armor from the mannequins while you are arranging your stuff. If the new houses behaved like normal player houses it would be great to claim all those shelves for our collections. But as it is you can claim everything you want from the house (pearls, wine, foodstuff and ingredients etc) and in 10 days (or possibly less) it will reappear for you to grab them all over again. Braggen needs nothing so would rather have the display space, but a character just starting out would do well from all those renewable extras, especially an alchemist.