Yeah, I get your points
I believe we've been through this exact conversation about Daisy before aaaages ago. I'm guessing if I refute with Daisy's flower power abilities you'll add on that it doesn't translate to Smash that well or won't offer that much of a difference compared to Peach or to a potential Waluigi moveset, leading to the conclusion that Daisy would only likely get in as a quick Peach semi-clone which at least boosts her possibility of being added.
More or less. You're right, we have had a similar conversation before. And I'm not saying Daisy can't be unique, I'm saying I sincerely doubt, should she be included, she would be. It just seems like advocating for a character whose crowning achievement would be becoming a semi-clone. I have similar feelings about Chrom (though it's not a 1:1 thing; that's a different conversation entirely) and... Dark Pit...
And I guess that's only part of my issue. I truly don't understand the fervour for a character who offers, imo, so little, and whose role in her own series of origin is, imo, so trivial. If she had even one of those things it'd be more understandable to me. Plus I can't shake my awareness that her popularity only truly manifested itself upon the dissolution of others, such as Rosalina and especially Bowser Jr, Toad, and Waluigi. To me she just seems like a "who do we have left?" character in every sense.
I still don't think Waluigi offers any consistent ability other than he sorta cheats games and physics a bit though. Besides a swimming-through-the-air up B I can't see much that can be drawn from his appearances that would do well to make him unique in Smash. Maybe the mechanical backpack from Mario Sports Mix could be a down B buff that lets him do multihit attacks for a single smash attack?
Well one key difference between Waluigi and Daisy is that Waluigi is more than a model tweak away from his parallel. Which means should he be implemented, seems quite unlikely he'd be based around Wario. In that vein, you'd have to rely on a unique moveset, one of which has been provided just a few posts earlier. I suspect Waluigi supporters would be better to ask, but a moveset that revolves around fighting dirty, trickery, and defying physics (possibly with references to some of the Mario spin-offs) seems a fitting moveset for Waluigi. I mean even when he shows up with his tennis racquet as an AT, the bulk of the attack is just him kicking you into the dirt, which is very Waluigi.
Dampierre (minus the hidden blades) from SoulCalibur could be a loose comparison in theme.
I mean I always pictured Daisy being a representation for the Mario sports games; since she's a tomboy and a sporty character, I'd give Daisy her sports outfit (plus an alt with her armor from Mario Strikers Charged) and give her various sports equipment. Neutral special can be serving a tennis ball, up special can be a slam dunk, down special could be her crystal ability from the aforementioned Mario Strikers Charged, the list goes on. It may feel uninspired to some, but it'd at least be a way to make her different from Peach moveset-wise.
Now one can say that this could easily be applied to Waluigi as well, as the two are pretty much now spin-off only characters, and if that's the case I'd say it's either gonna be one or the other. I'd personally go with Daisy, but that's just me.
Yeah, she could play that role. I'm just wondering why she
would play that role, when there's a more popular option who needn't be sporting an alternate, less recognizable costume.
And of course there's just the general issue of that having little to do with Daisy in particular.