The only character he made legitimate was Luke Cage and maybe the Hood. Most people still don't care for Spider-Woman and disregard her as a mere pet character of Bendis, not even Bendis could save her from low sales in her solo ongoing which lasted only 7 issues. He killed Dr. Voodoo (who was never really accepted as Sorcerer Supreme and his book was cancelled within 5 issues) and Ares (and I would say that Oeming and Pak made the character far more legitimate than Bendis who treated him as nothing but a blood thirsty savage). He turned the Sentry into a goddamn joke who was literally hated by almost everyone in the end (and he was killed too).
..but the strategy was sound for Bendis..the execution just fell short because , in the end, he overwhelmed us with something that lacked definitive cohesion and never seemed like well written arcs.
..and the Luke Cage "success" was really more connected to alias. If anything he made Luke work becuase he really likes that character and spent time and effort on him. (this goes for jessica jones as well) This was Bendis' "vision and scarlett witch", and if any credit is due, it's here.
..Not really true with a lot of the others. Bendis didnt give us much on any of them and he really could have. In fact he flat out botched most of them.The exception here is Sentry..who Bendis seemed more keen on developing a villian nature in and in the end at least tried to do something..although it never seemed like he had a clear plan.
The fact that he took characters like Protector, Echo, and made them hallow and uninteresting when he had carte blanche to make these characters interesting..really indicts Bendis run on the book. He also made a lot of established great characters like simon williams, carol danvers, wanda maximoff, etc.. hollow and uninteresting and compounded this by writing them completely out of character.
Hood is a good character..but the arcs he was in just did not work. He never seemed like he had any real plan to where he was going aside from constantly sticking him in some disjointed central villain role.
As for "dr stange" as an avenger...I'm a fan. Bendis actually wrote him decent,and Defenders have been so unsuccessful and erratic I'm fine with seeing him as an Avenger. The Mystic arcs (in avengers) with Bendis just fell short...they usually fizzled with some typical Bendis patented Dues Ex Machina.
..at any rate on some level i respect Bendis for some of the stuff he tried to do..I mean not all of these B listers work out. Busiek had several misses like triathlon and silverclaw, Stern had Dr. druid (who they really tired hard on), Etc..
edit" as for your last thoughts on Ares and Sentry..completely agree. In fact u can throw in Morrison for Protector there as well, as I really enjoyed that Marvel Boy mini he wrote several years ago introducing the character. Really Bendis only ever "nailed" Luke Cage, Jones, and Spidey..clearly characters he knew. He never really developed much new with us..and that is pretty bad seeing as it was such a LONG run.