This is an interesting post, and one that's really hard to do as we have not had a constant team that we can really base much of. Players have all chopped and changed and been missing games so we have no consistency to go off. What I would like to see is:-
1. Grey
2. AJ
3. Wighton
4. Mitchell
5. Gagai
6. Teaupu
7. Walker
8. Moale
9. Cook
10. Koloa
11. Arrow
12. Milne
13. Murray
14. Mamo
15. Duncan
16. Burgess
17. Keppie
I know this is not a conventional looking team, my thoughts are that if Mitchell and Wighton are outwide it's not going to stop them from kicking on the last if required, depending which side of the field they are they can come in as required. This also makes our attack look better on the edges near their line, you have Murray who can help push the ball out wide and Grey can chime in and help as well.
I actually think Teaupu played decent in his time in there and showed some good foot work and short kicking. He's possibly the weakest player in the side, which is strange to have in the halves, but I think when you have that many play makers around the field it would take some pressure off him and he wouldn't need to do as much. With the threat of Grey behind him, Mitchell to one side, and Walker to the other we might actually see him shine in attack.
I've also thrown Milne into the backrow... He's been making great yards from centre and getting some insane post contact yards at the moment as well. I've got him in there instead of Chee Kam.
Like I said, this is a bit unconventional, but I think it plugs up our issues in the back 5 pretty well, gives us some play makers all over the park, and have some impact off the bench. I don't doubt there are some people that will reply "I'm glad you're not the coach" well me too, I'm just a programmer that enjoys watching footy
but this is my thoughts on what could be a strong team.