Update 1.21-notes.md

A whole lot of enums used as variant/style presets should probably go away. Also, nether variants of pasture seeds and nether behavior of floral fertilizer could be a thing.

doc/1.21-notes.md

@@ -39,6 +39,21 @@
 * Flattern certain block entity attributes or block properties into block types
   * mana spreader cover colors (to be able to tag them as `#c:dyed` and `#minecraft:dampens_vibrations`)
   * mana pool dye colors (maybe even turn "fabulous" into a separate "color" somehow?)
+* Get rid of some enum-based behavioral changes:\
+  (A lot of the enum preset variant approaches can probably convert the enum type to a record type, if they aren't outright replaced by different approaches.)
+  * Luminizer types should be subclasses
+  * Grass types should probably just be subclasses of `SpreadingSnowyDirtBlock`
+  * Spark augment types should be identified by item type
+  * Crafty Crate patterns are already translated from and to booleans per slot, maybe the slot configuration should not be restricted, allowing data packs to provide additiuonal flexibility here
+  * `OptionalDyeColor` can go away if mana pool colors are flattened into block types
+  * Mana pool variants (diluted, default size, or creative) should be subclasses, not enum-switched properties (fabulous should probably be a color variant)
+  * Mana spreader variants should not be stored as enum reference, but as presets (including flags for redstone trigger behavior and rotating color rendering)
+  * Stew effects for mystical flowers should not be defined in a private `DyeColor` switch referenced within the `BotaniaFlower` constructor
+  * Platform block types should be separate subclasses instead of using a variant enum to hard-code the existing types
+  * Natura pylon should be a separatre subclass, and pylon type variants should not be enum references
+  * Figure out if there's an alternative to the variant enum and massive switch cases in `CosmeticBaubleItem`
+  * Horn/drum variants should be subclasses instead of having a type/variant enum that is being switched over
+* Elementium armor pieces (other than helmet) could be merged into `ElementiumArmorItem` with an additional constructor parameter for the pixie spawn chance (instead of duplicating the attribute modifier logic)
 
 ### Feature candidates (potentially breaking changes)
 * nice-to-have Patchouli features we could use, that are yet to be merged:
@@ -80,3 +95,4 @@
   * maybe add data-driven Orechid configurations to replace hard-coded GoG changes (mana cost per input item, operation speed)
     * GoG could eventually become a data pack instead of having all kinds of exceptions hard-coded into Botania
 * Armadillo: add it to Cocoon of Caprice as rare spawn, maybe find something to do with its scutes
+* Nether variants/behavior for pasture seed variants (either reuse existing seed types or make new ones to make nylium) and floral fertilizer (spawn mushrooms on nylium)