>.> I think we need to start specifying if we're meaning stacking as vertical (ie, on top) or horizontal (ie on the side). the cubicle is obviously on the side, but do you mean the same for the arts and banners?
The wall banners (not the standing ones) count as walls for placing wall details, both front and back. The modern art (not the pictures, but the collection of squares and rectangles) counts as a wall for the front, back, left and right. At a variety of depths, too. Items that 'stack' in this manner can be pulled out from the wall just by selecting the item and dragging the cursor so that it is over the item. The wall torch, wall sconces and round lights allow wall items to be hung at a variety of angles (all still vertical, however) based on the angle of the surface at the cursor.
The terms stacking and floating are pretty much used interchangibly. There is no differentiation between lifting off the floor, lowering down from the ceiling, or bringing out from the wall as far as I've seen.
As for lighting, I wasn't aware that any of the hanging lamps where altered, back in i7 (or was it 8?) the two different sets of asian tier floor lamps where altered to allow stacking (might have been between i6 and 7, it was before Statesman fired 75% of the staff). I'm fairly sure that none of the others at that time where altered, but I could have missed them when I went through and tested everything way back when.
The lights called floor lamps allow stacking in the same way, though less usefully since the pole is tiny. Most and possibly all of the ceiling lights allow stacking of ceiling items to lower them. I believe all the wall lights can be hung on themselves or each other, and I think they allow other wall items to be hung on them. As part of the measuring and picture-taking process I would also be checking for stackable surfaces, just to be sure I know them all.
@.@ oh? those went through? I thought they reverted them during testing...
>_> hunm.. guess I should have done my old random base tests with every beta again.. kinda stopped after they cut the base invention system out.
You should visit the Player Help - Base Construction forum at the CoH forums. A few fairly minor changes have had major impacts on base design just by making the process of stacking and floating items trivially easy. It's allowed a lot more people to be creative with their designs, and the mixing of ideas in the forum has helped that along tremendously.