Well, ME2's meathead addition arguably was Jacob Taylor, and he was far from being a popular character*.
*(To be fair, I'm going by anecdotal evidence at best - AFAIR, Jacob did extremely poorly in the popularity votes I've seen on message boards.)
Well I'm in the minority but Jacob was my favourite character in ME2. The fact he seemed pretty much normal and didn't have a major issue/quirk is probably why he isn't too popular.
I liked Jacob's personality but I couldn't get over how he looked. The body was too long and his teeth just seemed toO BIG. But the personality he had in the romance with Fem Black shep was hot...
You're right...it nice to see a normal person on board...that's when I warmed up to Jacob.