The "room" would not come into it. the ISAF version of the rules requires you to remove the "spirit" clause. So it comes down to the actual wording of the rule and as long as you can show that the trapeze wires are actually composed of wire at some point then you are in the clear.
Would this not be the same for standing rigging? Rule says only that it must be composed of 1x19 or 1x7 wire min dia 3mm. Similar wording to the trap wires. Just asking.
