I agree with your point, but I actually think all the new forwards fit - except Dessers.
Lammers' stats suggested a pressing forward, which fits a high press. I never thought he was a #10, which is where he has been played. Cantwell is far superior and had been very effective in that role.
But, you're right, it has been a mess, in terms of set-up and use of players. It's a different front three every week!
I don't know why he hasn't built on some interesting ideas, re the diamond. Perhaps he can't, or doesn't know how?
I have other issues with recruitment, too.