How L-Canceling can be turned into a good mechanic: "Shield Landing Lag"

So many people clown on L-Canceling for being a "bad mechanic", which I do agree. But I don't agree with the solution being "make landing lag universally low" like how Ultimate did. That just allows aerials to be very safe and spammy.

So here's my concept on how it CAN be turned into a good mechanic with some tweaks, along with the criticisms they address:

  1. Hitting Shield with an aerial by default doubles landing lag: Hence the name "Shield Landing Lag" (slightly inspired by RoA1's whiff lag). The default landing lag is still "Ultimate", but there's still a way to make it "non-L-Canceled". This addresses Ultimate's overly low landing lag making aerials not committal enough.
  2. If the attacking player presses L/R right after they hit an opponent's shield, they reduce their landing lag: This provides the light interaction that L-Canceling introduces to Melee, adding a layer of reading and reacting to shields.
  3. If the attack player presses L/R WITHOUT hitting an opponent's shield, they double their landing lag: This addresses the problem of "no reason not to L-Cancel" by giving a good reason not to. Misreading an opponent's shield and whiffing will still open the attacker up anyway.

Thoughts on this concept?