As it stands now, a logical gate on its own may have a maximum of three inputs. I suggest that if more than one ore of the same kind are put next to one another, either horizontally or vertically, they should all merge into one and the same gate.
This way one could have an arbitrarily large amount of inputs in a elegant looking row or column of ores, as opposed to the awkward amalgamations of gates and wires that are required to create such a thing now.