diff --git a/biome.jsonc b/biome.jsonc
index fd7e791eb93..85301efd000 100644
--- a/biome.jsonc
+++ b/biome.jsonc
@@ -58,13 +58,13 @@
       },
       "style": {
         "noVar": "error",
-        "useEnumInitializers": "off", // large enums like Moves would make this cumbersome 
+        "useEnumInitializers": "off", // large enums like Moves/Species would make this cumbersome 
         "useBlockStatements": "error",
         "useConst": "error",
         "useImportType": "error",
-        "noNonNullAssertion": "off", // TODO: Turn this on ASAP and fix all non-null assertions
+        "noNonNullAssertion": "off", // TODO: Turn this on ASAP and fix all non-null assertions in non-test files
         "noParameterAssign": "off",
-        "useExponentiationOperator": "off", // Too typo-prone and easy to mixup with standard multiplication
+        "useExponentiationOperator": "off", // Too typo-prone and easy to mixup with standard multiplication (* vs **)
         "useDefaultParameterLast": "off", // TODO: Fix spots in the codebase where this flag would be triggered, and then enable
         "useSingleVarDeclarator": "off",
         "useNodejsImportProtocol": "off",
@@ -73,17 +73,20 @@
       },
       "suspicious": {
         "noDoubleEquals": "error",
-        "noExplicitAny": "off", // TODO: Refactor and make this an error after save data refactored
+        // While this would be a nice rule to enable, the current structure of the codebase makes this infeasible 
+        // due to being used for move/ability `args` params and save data-related code.
+        // This can likely be enabled for all non-utils files once these are eventually reworked, but until then we leave it off.  
+        "noExplicitAny": "off",
         "noAssignInExpressions": "off",
         "noPrototypeBuiltins": "off",
-        "noFallthroughSwitchClause": "error", // Prevent accidental automatic fallthroughs in switch cases (use disable comment if needed)
-        "noImplicitAnyLet": "info", // TODO: Refactor and make this an error
-        "noRedeclare": "off", // TODO: Refactor and make this an error
+        "noFallthroughSwitchClause": "error", // Preventsw accidental automatic fallthroughs in switch cases (use disable comment if needed)
+        "noImplicitAnyLet": "warn", // TODO: Refactor and make this an error
+        "noRedeclare": "info", // TODO: Refactor and make this an error
         "noGlobalIsNan": "off",
         "noAsyncPromiseExecutor": "warn" // TODO: Refactor and make this an error
       },
       "complexity": {
-        "noExcessiveCognitiveComplexity": "warn",
+        "noExcessiveCognitiveComplexity": "warn", // TODO: Refactor and make this an error
         "useLiteralKeys": "off",
         "noForEach": "off", // Foreach vs for of is not that simple.
         "noUselessSwitchCase": "off", // Explicit > Implicit