That tube bar your referring to is hollow. I haven't noticed and structural integrity issue with it gone.. It's been off the bike almost a year now..Curious of any change in structural integrity that bracket V-frame offers? It's just odd that they went to such extraordinary lengths to well that tube/bar into the assembly that also supports the side running lights/turn-signals.
I have moved the reflector up to where the license plate light once existed. And, I Dremel'd off the ears that would've held the license plate. Now I'm left with a triangle pointing down and debating the cutting of that metal V-tube and the excess plastic ... or ... putting something on that plastic to hang behind the tire (e.g.: alligator tail).