Check out my rif over at h ttp://dw40k.freeforums.org/house-rules-t5.html
(**** editor, just click on the h at the front of http... grr).
Essentially I'm expanding load bearing as a system associated with the user/armor. Each attachment point can accommodate certain load systems which in turn can accommodate quantities of items or a total volume. I take a swipe on using a sling as well.
Let me know what you think.