So, here's the corrected version, #3, of the previous light lightstands during an assignment. As before, made from alu tent poles, but this time with curved legs, kept apart by small spreaders in the top. Still packs down to 40 cm, but this time max height is raised to about 250 cm. The stand is easier to move around, since the legs are kept in place, but you can still squeeze it together temporarily to move through a tight door opening, etc.
Mounted up top is a big parabolic 2 m focusable umbrella. The flash attaches directly to the umbrella shaft with a simple bracket I've made, keeping the head in the true dead center (not pictured), with an adjustable distance to move the focus point. The curved legs makes the direction of the umbrella to adjust orientation automatically: pretty much vertical when it's low, and gradually getting a slight downward angle when rising to the top of the tripod.
That way, the umbrella tracks what I usually want as an angle for different heights, and keeping the aim of the focus direction stationary at about 2,5 m in front of it. A person standing in front of it at that distance, will be kept in focus when height is adjusted. If an arbitrary angle is needed, I just use a normal, heavier light stand. And speaking of heavier...
This big mother of an improvised climbable stand was used to get some real height of the same umbrella, and carrying my old 6000 Ws Briese generator flash/head combo. See, we had to light the inside of a big hangar from a distance of a couple hundreds of m. Quite far from Canons 580EX (about 80 Ws) I usually mount to those 400 g stands; yes, sometimes tent poles just don't cut it :)