What you call tactics sounds like organisation and defence. Which is fine but that's what Sam and dyche bring you.
What we lack and have done for a long time now, certainly since moyes, is identity and style. We don't know what our tactics or style is, we have nothing there for players to have ingrained in them. More worrying is that if you make a list of our squad , it's hard to see 4-5 Players who go together effectively to form a coherent attack. Because that's what we lack, no chemistry attack wise. Defensively we could play 4 centre halves and stick them on the line all game if need be but attack has to have chemistry to work. Even with lukaku it was just give it to him and hope he scores