Now here's the thing: yes, this sort of object is helpful. But there are a bunch of these at MTS2 already (OMSPs).....and it's not like Windkeeper doesn't go there...WTF is she thinking? How futile an effort!
I think those are quite old. She probably got the idea from OMSPs, but her shelves cover heights that weren't covered by OMSPs at the time.
However, the OMSPs are better than Windkeeper's shelves, since the OMSPs can be turned invisible, unlike these.
So, once again, free content trumps pay content.