I was the original Gleeson at 7 supporter since he was playing a bit like a 7 for Manly although he's clearly playing a #8 role now, ranging out wide etc. BUT I do think he could adapt to a 7 role if required, he's quick enough. He's certainly playing better than Hooper at the moment. Some of those runs he did where he picked the ball up at the back of the ruck and ran straight and hard were exactly what Hooper did early in his career. And he does try to do a bit of pilfering although he's not great at it at this level - yet.
You then play Latu to make up for a lack of pilfering.
2. Latu 5. Skelton 7. Gleeson 8. Valetini is a lot of power.
Add in hopefully Bell, Tupou, Frost and a lineout foil in the Hanigan/Holloway type and you have a nice pack. Frost, whoever the 6 is your main lineout targets and potential options in Rob and Langi. You can then even bring Leota & Pone off the bench to keep the relentlessness up. It might not work - but it won't be beaten physically.