Java Datapack Block Tag Suggestion

A new blocktag; #minecraft:supports_netherportal should exist, and be able to be modified in a datapack. Writing something like:

{
   "replace": true,
   "values": [
        "minecraft:diamond_block",

        "minecraft:emerald_block"
   ]
}

would allow you to create a nether portal using diamond blocks or emerald blocks. It should be also possible to stop obsidian from being usable in portals, much like its possible to remove vanilla recipes by overwriting them.