I've read the thread more thoroughly than I care to admit. I appreciate it's about how the whole thing works in tandem, but poor contribution from the striker is really the only thing that isn't working broadly as hoped. I could play around with other roles etc but then one starts unpicking one's whole strategy. I do regularly adjust other roles as a matter of course anyway, often to try and get more support to the striker (or at least get more bodies up the pitch), and it has minimal effect. Just for clarity I haven't been trying new roles/duties at random, but deliberately to try and create a better goal threat, to find space, etc, in response to issues I'm seeing. But the issue just changes, with the end result being middling ratings for the forward.
I could set up a new thread but this might be an issue others experience when setting up a possession tactic (clearly at least one other person does) so thought it might be a sensible point of discussion here, especially as it already has people's attention.