Right Click to use previous input

I've noticed that when it comes to making recipes for stairs, slabs, etc that it can take well over an hour to do all those recipes one at a time for each block, I had to dedicate 4 hours recently when I had added around 20 stairs, slabs & walls to a variety of blocks in one of my mods.

So what I'm suggesting is that in the Recipe creation menu~
Right clicking one of the slots, will automatically use whatever your last input was

So you can for instance in a crafting recipe that requires dirt in every slot, just input dirt for one slot, and right click the other 8 slots to fill those in with dirt too.
Make it work with Tags and it will make building recipes en masse go from being a several hour endeavour, to maybe even less than an hour.

This could work with the block texture menu too, and other menus where you can input multiple things, so you can assign all 6 fairly quickly instead of having to open in a menu and look for the thing you want.

While this might not be a necessity for smaller mods, larger ones can hit the thousands in terms of elements, and every little bit of efficiency makes working on those big mods less of a chore. (as an aside, can we get an update to the smithing table recipe maker, it currently lacks the ability to use the slot for templates)