I mean, I just look at it from my perspective, from the unbiased perspective of someone who doesn't have a main.
In serious matches (tourney bracket or money matches against opponents I have to play seriously against), with customs, I play roughly:
- 30% Ness (1111)
- 25% Ganon (2122)
- 20% Little Mac (2213 in most matchups, 2113 against Sheik and ZSS)
- 10% Palutena (2312)
- 8% WFT (2322)
- 5% DHD (3121)
- 2% Charizard (1311)
In non-customs I play roughly:
- 80% Ness
- 10% Little Mac
- 5% Sheik
- 5% Ganon
(In both environments I've played Jigglypuff (1111) and Mega Man (1111) in bracket to success before, but would not use them currently; too rusty. I might play Lucas some in the future; we'll see.)
Not allowing customs is literally banning all the characters I play but Ness and Jolt Haymaker Mac. So... I guess I just play Ness? Zzzzz.
It think it's most obvious with not just Palutena, but DHD. Zig-Zag Shot is just a completely different character. As a ZZS DHD player, under no circumstances would I ever want to play default DHD. They are completely different, more different than Mario/Doc or Marth/Lucina. Banning ZZS DHD and saying I should just use standard instead is nonsense, like banning Luigi and saying I should just play Mario. I don't care how much someone may scoff at that;
the bottom line that default DHD is not a character I play, nor character I am personally interested in.
The same applies to default Palutena and default WFT. These characters not only feel boring and poorly designed (to me personally), but also bottom 5 characters with no viability (also imo). So suggesting I play these terrible wannabe clones of the characters I actually play is doubly insulting.
To be completely honest, I would care very little if all customs were removed except Super Speed, Zig-Zag Shot, Jumbo Hoops, Luma Warp, and Dragon Rush; I think those moves should have all been the default in their respective slots, and the characters feel incomplete from a design and creativity perspective without them. (And in the case of all except Rosalina, incomplete and crippled from a balance perspective as well.)
I would also miss Wizard's Dropkick, Crescent Slash, Grounding Blow, Grounding Dash, Fire Arrows, Dash Slash, Reflector Void, Weighted Header, Shooting Star Kick, Meteor Trampoline, and all of Samus's options. I think each of them provides an interesting alternate character that plays differently from the default in a really cool way.
Anyway, I don't want to digress this topic to customs any more. (I see that others made more customs posts while I typed all this, making this worse than a two-post digression.)
I will say though, that I don't care all that much specifically that the community at large seems too immature to take customs seriously. This is merely a symptom of the broader, underlying competitive immaturity of the community, and proof that Smash as we know it will never be a truly successful e-sport.