No.
The Defenders fandom is the only reason why they didn't bush the whole shyt. They shot a whole DD show without any connection to the Defender saga and had to scrap it to give you what you see in the trailer.
By now, PK Luke Cage would have had several years to get more acclimated to the streets and be able to integrate more of that flavor into his character. In fact it would be a neccesity. Recasting defeats the point of making everything cannon and doesn't nessecerily fix the issues. Even more dumb to recast NOW with Secret Wars coming. Same thing with Iron Fist, no need to give him his own show again but Hero's for hire or a street level character that can pop out here and there in other shows and if they don't pop after SW you come with the new.