Hi GibbletsnBits thank you for bringing this up, how does the spawn logic works currently is that I have a spawn points which will spawn a number of added preset to it. I may create a separate spawn powerups with different tiers to make them have lesser chance of spawning higher tier weapons. Do note that this will take some time to apply and I am not sure if this will solve the issue completely.
I may take a look into it and toy around with its settings when I have a free time for it.