The only way I see this functioning properly would be if this didn't apply to lower rank equipment, and further, if the equipment rules applied, like familiar rules, to what you can actually take into a thread. Both of which I still have issues with technically. This suggestion kills the concept of the "pack-rat archetype" of which I think there are only 4-5 on site and I play two of them.
If you look on Suikazura's sheet you will see a mountain of equipment, and she's designed around that concept. Having a lot of gear to compensate for not using a massive array of jutsu. Your suggestion, as I take it would kill this character as just refilling the used tools from one fight could end up costing upwards of 800-3000 XP
on C-Ranks.If I was to use her full inventory, which is mind you, almost entirely C-Ranks completely I would need to spend ~47,950 XP to refill everything. That's insanity to me. Most of that is paperbombs, kunai, and shuriken too. and thats an extreme case.
On Ichi, a character of mine with an EXTREMELY conservative inventory, (31 items total), I would need to speend 1550 XP *just on low ranking equipment to refill.* Assuming I understand your argument of consumables needing to be spent and bought.
You effectively turn Buki ANYTHING into a numbers game of 'how much until I can buy a new kunai', to which the answer is
1-10 Posts. Even if we were conservative and said each item is 5 XP were looking at 4,795 XP and 155 XP respectively still for just repurchasing consumables. Again, in the extreme of full inventory burn.
TLDR;; I disagree that C-Ranks and below should fall ANYWHERE near this system as it would get absolutely insane how much people spend on equipment, not to mention the logistical nightmare of tracking this.
That's an entirely different point I dont think should be brought up.