I'm in the process of re-vamping my BOB and realizing that I carry most of the items on my persona already. Does anyone else find that their BOB is going to be a mostly redundant repository for gears?

this is for urban/suburban area.

I have on me at nearly all times, 1st aid, knife(ives), multi-tool(s), flashlight(s), lighter, tinder, water, etc.

sure there are still essential gears I could carry. but my bob is being taken up mostly by water and extra clothing/warmth gear.