In gregtech there were two types of iridium plate :

• One type that is ore dictionnaryfied and can be crafted in many different ways
• One type which is not in the ore dictionnary and that is crafted with the iridium alloy ingot in the implosion compressor
  The problem is that we can make the iridium plates with other mods and we can skip using the implosion compressor so there's a balance issue.
  You should make like the old gregtech and implement two types of iridium plates.

The iridium plate used by techreborn should be iridium_alloy_plate, as it's crafted from iridium_alloy, so the code where the plate is crafted and used should be changed to use the alloy plate instead, haven't found specifically where these are registered in the code though...

you could also be funny and make it something like "super duper fancy plate!" in the lang file, minecraft needs more shenanigans. :)

Oh yea, this also affects 1.12 and technically it's an exploit, not an enhancement, you use a lot less iridium and you don't need diamond dust.