Agree on Gareth Davies. He really shouldn't have made the squad given his form this season for Scarlets and Wales and given his age. He's been terrible moat of the time I've seen him play!
Agree with others about Ben Thomas at 10. Personally I think he's a better centre, but Costellow is so bad, it's needs must atm.
Not at all sure about the centres. Grady needs a run of games, but I think he's better suited to 13 than 12, although it makes little difference with the quality of ball currently being provided. Not sure about Grady and James as a combo, I think both need pairing with more of a distributor. Tompkins fulfilled that role well at the WC, but was poor in the 6N. Beetham could offer a rounded option at 12, but he's completely untested in that position.
SR pairing should be Jenkins + Tshiunza imo. We just don't need him at 6, especially with Plumtree looking decent. Carter and Screech did better than I thought on the weekend, with Carter looking more physical than he has in the past, so would be happy with him too.
I'm still not convinced with Gareth Thomas either. He misses a few tackles every game, isn't a brilliant scrummager (although the issue is more on the tighthead side), and doesn't particularly add much in the loose either. Overall, he's just a bit meh. Pickings are slim in the squad, but maybe Domachowski deserves a start to see what he can offer?
So with all that in mind, I'd select the following:
Domachowski, Lake, Lewis
Jenkins, Tshiunza
Plumtree, Wainwright, Reffell
Bevan, Thomas
Tompkins, Grady
Grace, Winnett, Williams
Lloyd, Thomas, Griffin, Carter, Botham, Hardy, Beetham, James
Complete punt on Grace, but **** it, why not?