Do Nexus endcaps really have to be the same size as the tiles as the ThemeBuilder alpha seems to insist? That would make it a tremendous waste of screen space and really not worth doing, at least AFAIC.

Also, in the preview in TB, the (end) endcap in some docks is shown mirrored vertically, i.e., like a start endcap. IS that just some sort of buglet in TB, and will the *.nsx file still be configured correctly?

Finally, unlike the background setup in TB which is just about perfect every time, with tiles and advanced tiles, the actual size of tiles displayed in preview is invariably smaller than it should be and seems to bear no relation to the various offsets specified. What, if anything, am I missing?