I am interested to hear the reasoning, even if I also disagree with OP’s idea (personally I find LP exciting and at a pleasant rarity right now).
It boils down to that in order to maintain relative rarity of LP between uniques, the amount of each unique that you would need to collect in order to get the extra LP would vary wildly. Sure you'd only need 7 beekeepers gloves to get that 1st LP but you'd need something silly like 50,000 1LP wings to get a 2LP wings. (I made the numbers up to illustrate the point but it's a big difference)