If anyone knows a bit about scripting, or feels the strong desire to learn so they can revise the current enchantment forge system to allow an item that already has three enchantments to have one of those enchantments further modified, download and play with the Omega Forge. That is the base for Thay's enchantment forges.
In fact, I'll even go a step further and say what you'll need to modify the IsModMax() function in the dm_inc_forge script. Don't forget to set the FORGE_MAX_ENHANCEMENTS variable to 3, as that is what it is for Thay. And don't forget to do a full script build/recompile before you load the module and test once you do make any modifications to dm_inc_forge.
Good luck - and if anyone succeeds, you are guaranteed to have the thanks of almost everyone here.
In fact, I'll even go a step further and say what you'll need to modify the IsModMax() function in the dm_inc_forge script. Don't forget to set the FORGE_MAX_ENHANCEMENTS variable to 3, as that is what it is for Thay. And don't forget to do a full script build/recompile before you load the module and test once you do make any modifications to dm_inc_forge.
Good luck - and if anyone succeeds, you are guaranteed to have the thanks of almost everyone here.