I say just increase Francisca ammo count to 5 and Throwing Axe/Javelin ammo count to 4. Up weight of both accordingly.
You might start to see these lower-tier weapons on the battlefield with this change. I'd still use Heavy Throwing Axes, but I generally like to toss them early in the fight to get them out of my inventory (so they don't slow me down), although I keep the last one in 1h mode as my shieldbreaker (+3 heavy throwing axes have a surprisingly good 1h mode; 36 cut).