Having mained Marth in Brawl, seeing some replica of him was unappealing in all honesty. Longer hair and no tipper? Sakurai could've at least given us some fan service and given her some chest like Zero Suit Samus, but she doesn't even have that.
Smash 4 comes along and I main Pikachu for a while, try out Samus, then Dark Pit, then enjoyed Ike a bit.
However these characters just didn't hit the right chord. Either they didn't KO fast enough, they lagged too much, had too little range or weren't mobile enough.
Out of curiosity, I chose Lucina. And I have still yet to regret this choice.