So, not a mod I made, but mods I requested. Randy Radcliff at Cold Cold World customized an Ozone to meet my specs, all to get a pack as simple and functional as my Serratus Genie worn thread bare by 48 seasons of hard use. Still cost less than similarly sized CiloGear or WildThings packs, the only other packs in contention.
Full 201D Dyneema Grid fabric
Ice axe and crampon attachment system
Side daisy chains for securing pickets, foam pad, trekking poles, or skis
Weight: 1 lb., 8 oz. (Roughly, used a bathroom scale)