Hi Jake, I may have misunderstood, but if the heavy is between the...we'll call it the main line and the lighter section and then fly, the line is going to do this sort of thing.
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If so, I don't think that would be good. If you're swinging you want as straight as you can get. This is why so many have gone to the 3D lines. You still want to be above the fish, but the line snaking on the rocks would not be good. It seems like you're going to decrease your fishing zone.
Now, if you mean for nymph/bead rigs then I sort of see it? But that doesn't sound like fun.
Again, I might be missing it here.

What's the ultimate goal?