Steve.... Interesting... I'll give it a try.
I'm thinking, the best landing plane I have is a very old Cub and it has some very old servos in it, so old in fact that they are one of the few servos that are restricted to not allow 6v power and thus have diode voltage drops. Running the low voltage also keeps them slower.

You now have me wondering if it is actually those old servos running so slow that has made that plane so delightful to land.

Edit Notes: There is one other issue at play with this Cub. First, I didn't build it, but rather bought it at a swap meet. The builder used a plastic servo tray having three bays, the kind that the servos drop onto pegs and then keepers lock them down. The builder did something that wasn't kosher but it inadvertently turned out well. He placed this servo tray side to side in the wing bay instead of lengthwise. The trays did not hold the servos tightly and the elevator servo sitting crosswise to the control arm, gives a great deal. After purchasing the plane, I came close to changing it but flew if first and finding no flight problems, left it.

I now think it is a benefit and one of the reason the plane lands so well.