Looking at all of the suggestions for higher tier machines, they really shouldn't be able to be made via the regular crafting table so I thought that a new crafting table would be in order. I kind of got this idea out of the Planes mod as well.
I have three ideas for it:
Same idea as the regular table, but with either iron ingots or blocks
( )( )( )
(I)(I)( )
(I)(I)( )
I = Iron Ingots/Blocks
OR
(I)(I)(I)
(I)(W)(I)
(I)(I)(I)
I = Iron Ingot
W = Workbench