Must be in
MS
Gundam Ez8 (Shiro Amada)
Gouf Custom (Norris Packard)

Gundam NT-1 Alex (Christina Mackenzie)
Kaempfer (Mikhail Kaminsky)

GP01 Zephyranthes (Kou Uraki)
GP02A Physalis (Anavel Gato)

Vigna Ghina [Cecily's already there so why not her MS too]

Gottrlatan getting full moveset

Gundam Deathscythe Hell (Duo Maxwell) [Well a lot of people are dying to see this MS appearing after all]
Altron Gundam (Chang Wufei)

Gundam Double X (Garrod Ran)
Gundam Virsago ChestBreak (Shagia Frost)

Turn X getting full moveset

00 Gundam (Setsuna F Seiei)
Susanoo (Graham "Mr Bushido" Aker) OR Reborns Gundam (Ribbons Almark)

MA
Apsalus II / III
GP03 Dendrobium
Neue Ziel
Rafflesia
Destroy Gundam

Extra Playable Characters
Aina Sahalin
Bernard Wiseman
Stella Loussier

Others
More ZZ storyline representations in general [Mashymyre & Hamma Hamma, Chara & Geymark, Zaku III, and so on]
Official Mode storyline for 08thMS, 0080, 0083 and F91
Either put what-if victories for playable antagonists or don't put them in Official at all


Optional but Awesome if added
MS
Zaku II FZ [Zaku II CA clone acceptable]

GP03S Stamen
Gerbera Tetra (Cima Garahau)

Unicorn Gundam (Banagher Links)
Kshatriya (Marida Cruz)

Crossbone Gundam X1 (/Kai) [w/ Kincade Nau as Seabook's alt]
Crossbone Gundam X2 (Zabine Chareaux)
Crossbone Gundam X3 (Tobia Aronax)

Rig Contio (Cronicle Asher)

Gundam Maxter (Chibodee Crocket)
Gundam Rose (George de Sand)
Dragon Gundam (Sai Sici)
Bolt Gundam (Argo Gulsky)
Nobel Gundam (Allenby Bearsley)

Gundam Heavyarms Kai (Trowa Barton)
Gundam Sandrock Kai (Quatre Raberba Winner)
Tallgeese II (Treize Khushrenada)

Gundam Airmaster Burst (Witz Sou)
Gundam Leopard Destroy (Roybea Loy)
Gundam Ashtaron HermitCrab (Olba Frost)

SUMO Harry Ord Custom (Harry Ord)

Legend Gundam (Rey Za Burrel)
Akatsuki Gundam (Mwu La Flaga)
Gundam Astray Red Frame (Lowe Guele)
Gundam Astray Blue Frame (Murakumo Gai)

Cherudim Gundam (Lockon Stratos)
Arios Gundam (Allelujah Haptism)
Seravee Gundam (Tieria Erde)
Arche Gundam (Ali Al Saachez)

Knight Gundam [Real-sized from SD like the Mushas]

Extra Playable Characters
Elle Vianno
Beecha Oleg
Lucrezia Noin
Jamil Neate

If Koei & Bandai wants to have the DW:Gundam title relevant
Add real-sized Sangokuden mobile suits
Optional: Have them piloted by DW personages for extra awesome
Lu Bu Tallgeese (Lu Bu)
Liu Bei Gundam (Liu Bei)
Cao Cao Gundam (Cao Cao)
Sun Quan Gundam (Sun Quan)