I'm quite happy with how you executed the MC!
Their personality is bland (which is a good thing in this case) enough so us players can imagine them just the way we like.
Since i'm a visual novel nerd, i went through all the different dialouges from the choices you provided and i'd like to say that the way you wrote each of them is commendable! For example : there was a 3-option decision laid out for the players in one of the unit's tavern meeting where we could choose wether we have a wealthy upbringing, a poor one or something in between. It made me feel included!
As someone who had taken a liking to 'blank/insert' protagonists, i'd like to thank you for it.
You did a splendid job at displaying the different ways the MC could be molded into according to us players' personality choice.
Of course, there's always room for improvement, so keep up the good work <3
Best Regards, Star
(P.S. My 'OC' is literally just me but in the ADW Universe XD, Self-Insert go brrrrrrr)