Yeah, morphing is really the key idea here. You don't have to make all design decisions beforehand, but can wear something for a while and then make changes based on your needs & observations.

I haven't quite figured out how to apply this thinking to seam sealing though. The current garments that have taped / waterproof seams are locked into the taped configuration. For tents I have some geometrically water repellent structures (that guide the water away as long as it's coming from above), but for the soles of footwear, you might want something 100% sealed.