Sooo...after the first little outing of this kit, I got some really valuable advice on what to improve (what you can't see on the pictures). I will remove several 3D-printlines. I also decided to change the sash by fixing it to the pants. That way, I do not have to worry about the correct placement of that belt anymore.
Also, one Mandalorian Merc had the glorious idea of attaching one flat pocket under the long front fabric flap. I will absolutely do that. It will allow me to carry at least some essentials with me (some money, my glasses, and my asthma stuff - which I should have with me at all times anyway. Maybe even my phone). And maybe also a small leather purse with some larger coins in it hung rather loose. I hope it will make a certain sound which is, for whichever reason, important to me to have.
