**Allow Bride, Groom, and Maggot Zombies to Drop Blood Orbs**
The Bride and Groom are two "minibosses" that spawn in the pre-Hardmode Blood Moon, and have a chance to drop the Bloody Tear; it's spawner. Maggot Zombies are a special variant of zombies that only spawn in Graveyards, which the Bride and Groom also have a chance to appear in.
Strangely, the Bride and Groom are unable to drop Blood Orbs, despite the drop table for Blood Orbs and Bloody Tear being nearly identical otherwise (including CLOWNS). This is possibly because they can also spawn in the Graveyard biome, but this is all the more reason that they SHOULD be able to drop them.
Right now a player can go an entire game without seeing a Blood Moon, and while this isn't an issue for a Vanilla player, this is a HUGE issue for Calamity players because of the previously mentioned Blood Orbs, which are only obtainable here, and are required for a number of important items such as the Blood Orange life upgrade, and even more importantly Bloodstone Cores, who's armor is necessary for Auric Tesla, and a bunch of other important items.
Unlike literally every other event, even Sandstorms, Blood Moons are the only one which requires you to have encountered one before being able to create or obtain a spawner for it. Bloody Tear is in a weird spot at the moment, being INCREDIBLY common after you get a Blood Moon, but unobtainable beforehand. The recipe, frankly, is already pretty simple, and I don't think it's worth changing, just being 10 Blood Orbs and 3 Copper Bars, but I think there's another way to allow the player to get around this, which is via Graveyards.
Blood Moons in lore are already a fairly mundane event, and heavily connected to the undead, so I think letting the special variant zombies in Graveyards drop Blood Orbs not only makes sense, but would allow the player to actually get this item RNG free, even if the drop rates are incredibly low, especially if Clowns of all things can drop them.