Maybe a world lore skill 'maintain' weapon that would be half as effective as repair weapon? So that when you have it maxed out at 100% base it would be the same as 50% repair weapon? I think limiting it's max effectiveness so that people on their world lore type wouldn't have 310% would be a good idea as well. Maybe cap the effective part at 150% (75% repair).
That unreasonable?
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If you say plz because it is shorter than please, then I will say no because it is shorter then yes.