Alright, LuigiGAF. Help me out here. Long ass time Luigi player. I have his fundamentals down like nobody's business. Problem is, in previous games I've relied on Smash attacks and bair for kill moves. Unfortunately, it's harder to kill with those in Smash 4 for obvious reasons (buffed shield, less lag on dodges and shields, larger blastzones, etc.). I find myself connecting frequently enough to kill in previous games, but not being able to get out the final blow. I typically get my opponent to a whopping 140%-150% before finishing them off. By that time, they've already took my stock and pushed my percentage up pretty good so I'm at a disadvantage.
Basically, I'm trying to figure out some better strategies for killing with Luigi. Back air is kind of my go-to now, but the percentage has got to be huge for it to work. Up B obviously works great, but hitting with that is obviously tough, and easy to punish with a whiff, so I rarely go that route unless I'm sure it'll land. Dsmash is excellent for roll chasing, but it seems nerfed in kill really hardcore. Fsmash and Usmash are the two sure-fire ways, but those typically either require a hard read or a well timed rush/shield/spotdodge to connect.
Basically, I'm left with two kill moves at sub 140% (fsmash and usmash). Not great options. I'm thinking there's some great grab followups I can take advantage of. I've got Luigi's grab game down pretty great for racking up damage (dthrow to 2x fair/uair/what have you), I just need to figure out how to follow up them up with kills.
I also notice that I'm not as good as chasing other players. I can rack up damage well, push them off the stage, but not finish off-stage. I hesitate even though I know Luigi's air game is exceptional and I could easily finish them off with a bair or even an fair if I catch them at a high enough percent. Problem there is that I find a lot of character's hitboxes in the air are a lot bigger than Luigi's, so I frequently just take a hit instead. Either that or their aerial priority is a lot higher.
Anyway, quite a rambly post. Apologies.
TL;DR: I'd like some advice on Luigi kill moves.