If Luigi were to get a nerf, it'd be more base kb on down throw. Allows combos out of it, but doesn't allow early % regrabs on anyone without Jigs-esc attributes.
Got a question, though: Is Luigi really that huge an issue in the current metagame where he loses to random mid/lows ( and
,
,
exist to keep him in check) that the nerf-bat is necessary? He gets a lot when he gets in, but how is he getting in? Why are you just standing on the ground when he throws a fireball? Fair is only about a Luigi and a half far in range, and he doesn't exactly have the mobility to reach you if you just jump over it or have a fast jab. And, if he's close enough to fireball before you can jump, he's also close enough to not be able to get out of the end lag from fireball to follow up.
Another question: Why are people not DI'ing the throw properly past the low %s? DI so you go above him. He has to commit to backwards momentum to hit you in front of him, or take a few frames to RAR something to have a chance to follow up. At High percents that DI gets you killed, but at mid percents (after 1 grab, or 40ish%), you save yourself a lot of trouble and % because, if he doesn't RAR you, his followup is *first hit* > Bair or UAir's late hit (which isn't true). Bair sends you far enough away to reset to neutral and UAir isn't a true thing. Or he can DAir, which will give you enough time to react + Tech OR hit Luigi on the bounce because it's not safe on the strong hit.
He gets a lot from getting in, but, unlike Falcon, it isn't exactly easy to do against many of the better characters of the game. His Traction makes so much more safe on shield against him. His air mobility makes following up difficult in quite a few situations. What's he going to do against a patient player that doesn't care about his fireballs? Max range you can jab on shield and break any chance for a grab. You can jump and he can't do anything about it other then go for a Fair. If it's 3/4 to 1/2 range for the fireball, most relevant characters can jump and punish him for it.
Maybe I'm talking out my ass or something, but I feel that his flaws (getting in, poor mobility, limited options at certain ranges and/or with DI, poor overall range) justify his strengths (stronger then average kill power, kill setups, very strong advantage game). It would be extremely arrogant for me to say that people don't know the matchup, because I know a lot of people here know their ****. I will say, however, that any character can sound godly when their biggest strengths are talked about and nothing else.