Description of your suggestion.

It would be nice to have a way to limit who can reforge weapons and who can't, I've tried to stop the tab inside the anvil from rendering for players with a specific tag, but to no avail, do you think there would be an easy way to do it?

I got it on my own.

How?

On the onClick(MinecraftClient client) in ReforgedTab.java just made an if statement, will be posting the fork in a while.