This is a small request about a minor annoyance, but I hope it's doable without rewriting half of the engine.
Basically, I'd like a way to disable the archaic explosion LOD system, which assumes there are four LODs for each weapon impact or piercing explosion. Nobody uses effect LODs since mipmaps were introduced, so this means making a weapon_expl table with the list of all explosion effects just to make the debug shut up. Otherwise, this table is completely useless.
I'm not sure if removing the warnings and making FSO determine the amount of LODs by itself is an option, but I have a feeling that considering only retail uses this feature and it's no longer of any use for it's intended purpose, removing the explosion LOD system altogether might not do that much harm.