Agree, some new Chapter specific accents/affectations would go a long way, even if the dialogue stays the same. It throws you having a Space Wolf sounding like an Ultramarine.

The whole decision of linking the PvE to the story mode and subsequently it's Ultramarine tone and characters was a giant mistake in my estimation. Why they didn't opt for generic marines for the PvE side of things and made voice packs part of the Chapter DLCs I'll never know. Would've been the far superior option for both us and them.

This is a relevant complain but I'm personally letting it slide becuase SM chapters are so distinct from each other you guys have no idea how much work it'd take to do them all justice. I can only imagine that doing this all right just for multiplayer would be taking too much out of their focus.