need ideas: G/D fan story

I got inspired by the work 'Zone Goodwill' and will be writing my own story numbering maybe 50 pages-ish. the planning and cast have ben created, and I leave it up to you folks on what type of story you want, following guidelines of course.

____________________________________________________________________________________

Main characters:

Royal nation:

1. Cpl Hans Weber, Soldat brigade
2. Pfc David Esposito, Soldat Brigade
3. Sgm Faith Steiner, Officer watch
4. Sgt Himari Sato, Lancer legion
5. Lt Zayn Al-Tamimi, Rook brigade
6. Sgt Piotr Nowak, Old guard

Golden Empire: 

1. Kgt Felix Müller, Soldat brigade
2. Sqr Elise Martin, Soldat brigade
3. Kcdr Pietrov Vasilovych, Rook brigade
4. Kcdr Giulia Rossi, Mortician wing
5. Inq Ioannis Petrović, Jaeger Corps
6. Grkg Heinrich Müller, Lancer legion

Solace coalition:

1. Chen Xiuzang, Miner Battalion
2. Wang liuxin, Miner battalion
3. Chloe Louise, agriculture specialist
4. Alperen Bayraktar, Marshall

Bandits:

1. Conrad
2. Marcus
3. Margaret
4. Abraham

Plot line planning:

Objectives

1 main plot: 
1 supporting plot:
3 character growth arc:
2 side plot:

feel free to comment. if I get enough traction I'll give updates as I go along writing it and so. chances are I'll mesh some ideas together to make a good one. thanks for reading all of this