The PDW 30 damages is quickly obsolete because or armor scaling. Or there’s one I never saw.
With Aimed Shot/Adrenalin Rush and Shotgun, the combo should be much better but rare because of WP price, particularly because often you’ll want use War Cry too.
It’s really a small combo I never bothered test. I also wondered about boosting bash. The Heavy skill plus a special skill that seems target bash but probably not.
I don’t think I understood fully your explanation, but for close quarter you can consider the risked mutation Tentacle Torso, it’s weird but it seems attract close range attack of Siren. This mutation design is on base of the dev general design of Berzerk that I couldn’t explain (close range and low armor). But the retaliation is great and the paralyze attack is powerful if you want capture. The retaliation works also when it’s another soldier that is attacked, ok both should be close together and the enemy still close contact, but it’s fun and cool.
EDIT: I have the mutation on a stealth soldier, sigh it involves a -10% stealth like all torso mutations. This soldier has only 70% stealth, it’s playable, but that’s also probably why the mutation didn’t look that bad, and clearly it’s not compatible with Jetpack that was the topic.