I also like the 16" mid length and have a standard heavy weight barrel. I have shot the 16" lightweights only in the car length handguards and I did like them. I think the medium taper barrel would be ideal as my heavy barrel is a little muzzle heavy but it is steadier than a lightweight from the increased weight. I was concerned that the strict lightweight barrel would be sensitive as to how it was held like my old mini 14 was. I could change the impact several inches at 100yds depending on how I held it. perhaps someone would offer a barrel that was tapered from a heavy to a medium profile under the handguard the the front sight block at the standard 3/4" and then a slightly heavier lightweight profile from the sight block to the muzzle. You may have something going there.