Not worth the risk for me personally but the potential is there for sure and can totally see why people like him.
Durability concerns with a significantly higher requirement (and cost) than English and Ryder is a major obstacle even if he only plays 10 games.
If I take Gawn it's hoping he can hang onto a 115+ average and that Darcy doesn't go supersaiyan.
For Marshall to work he has to match the 2nd worst of Gawn/Grundy/Darcy (and you have to pick whoever is the best of the group) or you're leaking points, there's no value apparatus in the rucks because 100% of lock and loads is made up of that trio so if that trio produces the top 2 (or even worse are all equal as top 2 scorers) then you leak to everyone with lock and load.
English only needs like 93 based on where I have the forwards at and everything above that would be gravy as it just moves him from the D6 slot upward. Personally I think he's capable of getting back to ~100, there's definitely a potential 110 season in there but that's a perfect storm that I'm not anticipating.
Major reason I'm leaning English is I'm scared on Gawn holding the 115 line and equally terrified of Darcy going to 130+ land. English lets me assess and make an informed decision, Darcy has so many question marks that I'm fine with paying a bit more for clarity and I just can't see the upside on Gawn which means I'm most likely paying less.
That said, I feel dirty fading Gawn