I Have discused with users on my server what should tekkit add , And we came up with a few ideas , I.E - Cars / Buses / Planes !! Roofing because we dont have any to make our houses look realistic !!
The cars/buses/planes idea was because we have minecart or boat and we would like things that dont need water or rails , That can be controlled like a boat but without the water! They wont need to be fancy but aslong as we can have automobiles without requirements !! Thanks for reading, Rainstorm33