If we count all canon Roger crew mates (including Toki, Oden, Neku, and Inu), we're left with 32 members on Roger's crew, according to the Wiki. So, here we go: the full 32 Straw Hats that will sail to Laugh Tale
1. Luffy
2. Zoro
3. Nami
4. Usopp
5. Sanji
6. Chopper
7. Vivi
8. Robin
9. Franky
10. Brook
11. Jinbei
12. Yamato
13. Momo
14. Tama
15. Carrot
16. Karoo (I love this duck so much)
17. Sabo (honors Ace’s legacy by helping Luffy become Pirate King, is ordered by Dragon to go to Laugh Tale to bring about the New Era)
18. Wyper (fought with Luffy to defeat a God, and is tied to the ancient history, with his people protecting the Poneglyph)
19. Bartolomeo (he has to be there to see his idol reach Laugh Tale, right?)
20. Jewelry Bonney (they unite over Kuma and food, lol)
21. Boa Hancock (she finally gets to have her adventure with Luffy)
22. Bellamy (brings the new flag to Luffy. Wanted to see Skypiea for himself, when he first didn’t believe it exist; Bellamy said the same thing about One Piece, so him seeing it with his own eyes by helping Luffy fits)
23. Koby (as an operative of Sword pretending to infiltrate the Straw Hats, when he’s just helping his main man Luffy become King of the Pirates)
24. Smoker (defects after Egghead is destroyed by the Marines)
25. Tashigi (defects for the same reason as Smoker, and after realizing she and Zoro are cousins from the Shimotsuki clan)
26. Mont Blanc Cricket (returns with information to help the Straw Hats reach Laugh Tale after he helped them reach the sky, where Luffy rang the bell)
27. Shirahoshi (wants to go to the surface and live bravely like her Mom and Luffy)
28. Rebecca (has to live in exile after Leo attacked a Celestial Dragon as her escort, goes to the Straw Hats)
29. Surume (I miss the giant octopus, okay?)
30. Loki (last crew member, Elbaf is the last island before Load Star/Laugh Tale, the crew needs a giant, IMO)
31. Stussy (Carrot’s Mom, and also wants to serve Vegapunk and protect him, as well as destroy the WG)
32. Vegapunk (York joins Blackbeard, Lilith joins the Straw Hats to get revenge on York, and to research ancient technology in Load Star and Laugh Tale)
I really wanted to include Paulie on this list, but he just doesn't have a connection to Luffy and Luffy's dreams.
I wanted to add in characters that respected Luffy's dreams, or were heavily involved in his adventures and close with him. Smoker has been chasing Luffy since Logue Town, of course he'll chase him to Laugh Tale. On the same ship, wheeee! Kind of wanted to add more animals, here, like Laboon, but it would be kind of weird for Brook to meet Laboon before they go to Laugh Tale, I think. Who knows, Crocus could show up with him.
Since Laugh Tale will have a bunch of forces vying for it (Shanks, Blackbeard, the Straw Hats, Cross Guild, the Government), the Straw Hats needs some more fighters.
If this crew was assembled, Sabo, Yamato, Wyper, Bartolomeo, Bonney, Boa, Bellamy, Koby, Smoker, Shirahoshi, and Stussy make the Straw Hats not just a Yonkou crew, but a Pirate King crew, full of experienced fighters with versatile styles.
Luffy, unlike past Pirate crews, will have true balance: his own crew will be large, strong, and tought to match, and then his fleet will also be full of powerful fighters. Whitbeard had few top tiers, but a very solid, large crew with lots of allies. Roger had a ton of top tiers, in Rayleigh, Scopper, and Oden, but not much of a fleet. Big Mom has a large, balanced crew, but is too crazy to control them, and doesn't have top tier commanders, same as Kaido. Shanks has a crew full of top tiers, but a weak ass fleet.
Luffy will be the first pirate in the series to have a large, powerful crew, and a large, powerful fleet. The true Pirate King.
Once the World Government declares war on the Straw Hats and their territories, Luffy's allies will come together to form a super crew, whooooooooooooooooooooo!