With the change in subs rules, I'd think the make up of the bench will still be similar:
Two props
A back row forward who can play centre, or one of the starting back rows can.
A half/hooker, ideally a quick fella to bring on late.

Use four changes to split the game across the four props. Take one second row off at 20-30 mins and bring the sub on to play the rest of the game. The second row who went off come back part way into the second half. That leaves two changes, either swapping a half/hooker twice, or doing it once for the last quarter or so and keeping one change back.

Stevie Ward?!

Or a with a player like Aiton who can play loose you can include that in your interchanges.

Yes I would consider Ward as someone like Ablett, a back row forward with good hands who can do the hard yards if necessary.

Problem with that strategy is that if you use two changes on your hooker you are effectively using your last interchange at 60-65 minutes to spell the other starting second-row.

That's too big a gamble IMO. You want to have one (if not more) interchanges up your sleeve heading into the last ten minutes just to cover for fatigue/late injuries.

Thoughts on Mullally remain the same as when we announced it he's a young forward with potential who'll add depth to our Prop rotation.
RE-Aiton IF he and his agent are playing the "we've had a better offer elsewhere what are you gonna offer?" card then he's as good as gone GH doesn't Fcuk about like that we all know that.