I love the engineer and wanted to throw out just a couple suggestions.
I would really like to see the mechanics of backpack on kits change. I would be happy with just being able to alter the color or at least be able to turn them off so my normal back piece shows (fractals/jetpack) while I’m in a in kit.
I also would suggest for a future skin for the rifle to be a cross-bow. I think the mechanics would remain the same as the rifle just a new skin suggestion so the Quiver back piece could make sense for the engineer.
Just some thoughts for consideration I felt like sharing.