With Dixon, Flanaghan, Flannery, Wilkin we have too many players who are similar and are there to provide a solid tackling performance. Because of that it's difficult to pick more than 2 of them and have any strength going forwards.
I think this is why Dixon is also on the way out with Flannery. Put's us back to 2 solid tackling back rowers, which you can afford to have, with Sia and Manu being the muscle going forwards.
I'd also agree La Franki could be a 3rd 2nd rower to give us that umph going forwards, if we could find a couple of props.