The 109s were just redone.
Besides the texture reformat to AH2 std's, I don't see the point in adding just a few polygons to put them on-par with the usual uptrend in model accuracy... it'd be something like a barely rounder engine housing, antenna wires, small stuff like that.
TrueKill, following your logic, every other plane taking part in TOD's first theater that's not been updated since the last 109 update should have priority. Nevermind those that, as you say, were also used thru-out the war.
Those that were used throughout the war but aren't part of the first TOD theatre will have to wait.
Look at the Spits, or, TOD considerations aside, the La5. It's like someone took a piece of wood and carved a few dozen faces off.