Most drapery problems in Los Angeles homes are hardware problems — the rod is too small for the span, the bracket sits proud of the wall, the finial is from a different century than the door hardware, the track has no pocket to disappear into. The fabric gets blamed; the hardware did the damage.
The studio specifies hardware first — at the architect-of-record stage when possible, before the rough-in is closed. Recessed pockets, ceiling tracks, French returns, and motorized integration all want to be coordinated before the drywall closes, not after the painter leaves.
Ceiling track curtains are the common request behind most of that early coordination in Los Angeles: a surface-mounted or recessed track carries the panel where there is no header to hold a rod, lets the fabric read as a vertical plane, and stacks tighter off the glass than a traversing rod allows. Which of the two we specify depends on ceiling construction, pocket depth, and whether the track is meant to be seen at all.
Specification references: the rooms that most reward early hardware coordination are bay windows and corner windows, where return brackets and recessed pockets are easier to plan than to retrofit. Built references include the Trousdale modernist glass pavilion and the Holmby Hills double-height foyer.