I played a binder in 3e and really enjoyed it. Flavor is my cup of tea, and the character I played was a changeling who would shift form to resemble the various vestiges she was binding (her name was Rasa, as in "Tabula Rasa"). The fiction for the vestiges was very, very good. Great role playing mechanics in there.
It was very complicated, but by late 3e this wasn't too big of a deal.
In 5e, a Warlock could do it, though I'd love some Vestige-flavored Invocations. And a key element of delight was in the vestiges showing their little personality traits, so if those Invocations came with a bit of personality, that'd be dope. Hm....