I am not questioning whether we need one or not C_Latic, but none of those you mentioned was or is, or ever will be a 'horrible shithouse of a CM in the Morsy mould'.
Cousins probably could have been, he was certainly slow enough to match Sami, but he always got injured just thinking about putting a tackle in.
Max had more chance of tackling someone with one of his dart like long???? throw ins.
I don't think I ever saw Tom Naylor attempt a tackle, in fact, he never really seemed to do much.
And lastly, Thelo is Thelo, he doesn't need to tackle, he is Thelo simple as that.