So , Some thought came into my mind , for the sake of more healthy sales for the game ( I personally want it to be No.1 Capcom SKU ) , Will u be OK with an optional separate Co-OP mode that isn't canon and that is a tweaked version of the main campaigns ? think about Ada campaign in RE6 with an invisible partner in cutscenes like Agent but this time the mode is completely separate , think also wesker mode in RE0
I guess with some tweaking in that mode it can work , like helping partner in healing/when being attacked , exchanging inventory ...etc