Nerf eleclaw's paralization effect (and make it blue, since it has the yellow color from Goro). When using eleclaw, npcs become useless for 10 seconds, but they can be stunned again during those 10 seconds, essentially inf-stunning them, which makes the fights incredibly boring. Even challenge boss fights become extremely easy with eleclaw right now.
Make eleclaw apply visually to swords, i think it'd look pretty neat and swords already do get buffed by eleclaw, so it's just a visual thing (and minks have been shown using electro on their swords in the anime)
Make busoshoku haki imbuement apply visually to Kuro's Cat Claws (currently they don't become darker)
Give the "magnetic" tag to the newly added basic weapons (Katana, Cutlass, Broadsword, etc). Jiki Jiki can't attract these weapons or use them as magnetic items at all right now.
Give the haoshoku lightning effect to pop greens when using haoshoku infusion. Bullets and arrows make the haoshoku lightning effect appear when they hit an enemy, but pop greens do not.
Fix devil fruits encyclopedias not merging properly. Also flags and wanted posters not becoming enlarged when surrounded by wool/paper in a crafting table. These are probably the same bug, so I suggest maybe having these processes be done in a different way, maybe through smithing tables or anvils.