Lol @ Luigi's tornado being a great approach. I only use it as an approach against Samus, and if I'm sure I'll hit with both hits against Fox/Falco/Falcon at 0%.
Why would ANYONE EVER want to use WD -> Fsmash? That's just terrible and serves no purpose.
Yeah, Luigi's traction hurts when it comes to things like shines. But we've kind of turned it into a positive thing. If you shield against certain moves, you'll slide far enough away that you can WD OoS into something else without receiving further pressure.
As for shield grabbing, a lot of Luigi's approaches come from WDs. If you do it properly, you should go past them if they shield, lol. Sometimes, depending on the situation, you can hit them, slide past, then pivot grab. I usually do this after a jab because a human's first reaction is to shield it.
What jab setups are you talking about? The only possible jab combos is jab into more jabs or Ftilt.
The only moves with reliable kill potential are: Dair, Fair, UpB, Usmash. Otherwise we have to rely on killing offstage (Bair edgeguarding is severely underrated).
Wait...
why am I teaching Brawl players how to play Melee Luigi