If this remains a long term design limitation it'll be interesting to see if people design satellite hardware that consists of multiple individual rectangular slab sized things (generally same size/shape per piece as starlink v3 test satellites which have unfolding PV/antenna), that can latch together once dispensed, and further unfold.
Such an architecture might not be an impossible design consideration if the goal is to have something big like the sun-shade/cold side of the Webb telescope.