Replacing to be DynamicTNT.
In it's entireity it's been re-written. All previous blocks were removed and will have the potential to create the same exact thing that used to exist (Like arrow tnt/egg tnt).

The new implementation is that you now create a TNT workbench (of which currently has no recipe to be actually made), from there you can place regular TNT in the center of the crafting grid, and whatever you place on each adjacent cell will be used to dynamically create a new TNT variant, for example: If I had a regular TNT in the middle and arrows surrending that block, it'd create a TNT that has arrows attached, of which when primed/activated, will launch the apporiate amount of arrows. This also allows you to recursively keep making new variants of the previous TNT variant that just constantly dependant on each-other...

In order to get this to dynamic concept to work with (a rather debatebly non-dynamic Minecraft) there's potentially going to be a bit of hacky work that otherwise would be better to do in another method of which doesn't exist without re-writing core Minecraft functionality...