I see that I'm not alone in looking for a 'water carrier' that is actually well designed.
Last year I tried moving to vacuum bottles that are lightweight metal and therefore robust. FAIL.
My idea is this, all bladder type carriers are meant to slip into the pocket on the rucksack and be next to our backs. yet they all are designed to become bottles when in use.
Why not add gussets to the design so that a shape can be created that has less impact? The bladder could then occupy more space whilst being maybe as little as 1/2 inch thick. The possibilities become endless with the use of gussets to add shape,,