Does a woman have to scream, yell, and buck like a wild horse during sex? No. Does it make for a better experience? Sure does!
The band has to have some sort of energy coming off the stage. It shows you are into your music and that energy does get conveyed to the crowd and helps them get into it. If not you, the rest of the band has to pick up the slack. I'm not saying it has to be 100% of the time, but at least one person has to be showing some sort of energy. It's a part of seeing a metal band. It's rare that a metal band can have music so overwhelming that some sort of movement or emotion is not required. It's been said that Led Zeppelin used the name Four Sticks after having their stage presence described as "four sticks in the mud" in a review. Led Zeppelin is covered, your band is not
Our old guitarist stood like a stone statue for many years. We used to joke about it- all the live pictures he looked exactly the same. He was concentrating on his playing, which is definitely the priority. But after a while he was able to incorporate some facial expressions and movement. I on the other hand was the spaz, partly compensating for it but mostly because I was really getting into the show. Bass is (usually) less technical than guitar, surely you can find some rhythm parts with open notes or something that you can have some sort of movement. Practice by yourself while playing at the jamspot to work out the kinks and get over the awkward feelings and then unleash them once you've got em down.
The band has to have some sort of energy coming off the stage. It shows you are into your music and that energy does get conveyed to the crowd and helps them get into it. If not you, the rest of the band has to pick up the slack. I'm not saying it has to be 100% of the time, but at least one person has to be showing some sort of energy. It's a part of seeing a metal band. It's rare that a metal band can have music so overwhelming that some sort of movement or emotion is not required. It's been said that Led Zeppelin used the name Four Sticks after having their stage presence described as "four sticks in the mud" in a review. Led Zeppelin is covered, your band is not
Our old guitarist stood like a stone statue for many years. We used to joke about it- all the live pictures he looked exactly the same. He was concentrating on his playing, which is definitely the priority. But after a while he was able to incorporate some facial expressions and movement. I on the other hand was the spaz, partly compensating for it but mostly because I was really getting into the show. Bass is (usually) less technical than guitar, surely you can find some rhythm parts with open notes or something that you can have some sort of movement. Practice by yourself while playing at the jamspot to work out the kinks and get over the awkward feelings and then unleash them once you've got em down.

