That thought never even crossed my mind. I’ve always just used braid when I need to get deep but then again your fishing wayyyyy deeper than I ever do if your trolling Lake SuperiorThe steel line is to get your line down deeper. You can also buy copper line for the same reason. The pound test is right around 45lb on my steel.
I should also add that I buy my reels used off Ebay. I really want ones that are broken or at least say they don't work or have missing parts. I have not found one yet that was truly broken. I clean and rebuild them with carbon drags.