Dedicated line question

I asked this question within another thread about the subject of dedicated power lines, but received no response.

I have what is essentially a dedicated line, seeing that the only other things this line serves are an overhead foyer light (incandescent) and two outlets in the garage that are seldom used for anything. Can I somehow get this particular line it's own dedicated ground with a minimum of fuss? What benefit would I receive from installing multiple lines for various components?

I am using ACME cryro outlets, which provided a major upgrade. Where can I go next to optimize my power? I do not use a line conditioner, but have high quality power cords.