The recipes that use limestone use the item id rather than an item tag. This makes it impossible to make other limestones compatible using kubejs unless you redo every recipe

Examples

Current Recipes
{ "type": "minecraft:stonecutting", "count": 2, "ingredient": { "item": "alexscaves:limestone" }, "result": "alexscaves:limestone_wall" }

Better recipe
{ "type": "minecraft:stonecutting", "count": 2, "ingredient": { "tag": "alexscaves:limestone" }, "result": "alexscaves:limestone_wall" }

Doing this would allow pack devs to quickly make it so you can use other limestones but adding the alexscaves:limestone tag to the limestones you want to be compatible. This type of stuff is standard practice for mod developers and I hope it is changed. The more tags the better.