I know at some point you need to build combinations across super teams, but I wonder if Rennie will be tempted to lean heavily on super rugby combos in the forwards to start.
So you could have one test tight 5 or Slipper, Lonergan/Fainga’a, Ala'alatoa, Neville & Swain & another of Robertson/Bell, BPA, Tupou, LSL (Lukhan Salakaia-Loto) & Hosea. Use Bell/Robertson, Kaitu’u & Fa’amausili as bench front row for both packs.
Or something along those lines.
Backrow a bit more clear cut so I would give Hooper, Wilson & Valetini a bit of time together to try and get their roles right but use McReight & Uru/Swinton/Anstee/pick your favourite other back rower here to manage work load.
Hopefully that would provide a solid platform up front where to try and get your backline to humming and then merge your best park over time.