Image can be a really subtle thing. As far as I'm concerned, if your band "doesn't have an image", then that IS your fucking image!
If you're gonna have a band, you should at least look like you all came from the same place, or have similar interests. First impressions, right?
I had a power metal band that did very well regionally over here. We all had long hair, and our bassist was bald, covered in tattoos and piercings, and he wore camo shorts and bright, stupid t-shirts onstage. Looked like he came from a completely different band. After we all sat down, found some key elements about our sound that people could relate to. We fashioned a "uniform" of sorts based on that. We all bought black button-up shirts, black jeans, and our female singer would wear this nice evening dress in a colour that matched our backdrop. We all did stuff to our uniform depending on our personal styles, I would roll the sleeves up, our guitarist likes the long-sleeve thing, and our bassist took the sleeves off completely.
After going over photos and videos of our gigs, we looks way better and people definitely reacted to it, and it wasn't exactly a costume, it was all clothes that you might wear out on a date to the theater or something. But the unified look can tie a band together. So I don't think it's a bad thing at all. I tend to prefer the more subtle looks though.
