The problem is a localization one; I just need to change unlocalized names to their appropriate localized ones, except replace "shiny" with "platinum," "ferrous" with "nickel," etc. I think I can do this with MineTweaker, but on the one day I have off, I'm stuck waiting for the authentication servers to come up.
UPDATE:
The localization seemed easy enough; now I just need to test it before I can upload the changes for addition into the modpack. If things work correctly, Thermal Foundation Nickel and Platinum will be used instead of ElectriCraft ores, but with the Electricraft spawn rules, and using their modern scientific names, rather than "Ferrous" and "Shiny." While I was at it, I also replaced "Mana Infused" with "Mithril." I just wish I wasn't locked out of even an offline game.
On the upside, if this works, all items that previously had "Shiny" or "Ferrous" in their names will now have the modern names instead. Including Tinker's Construct parts and tools.
As a side note, if this works, this should also close the progression hole with the iron-minable platinum.
As for the Nickel/Platinum problem, have you tried
RotaryCraft nickel/platinum, rather than
ElectriCraft nickel/platinum?