Now their music is kind of obvious but when you think about the scene back then it’s pretty amazing what they did.
Only in the same way that Led Zeppelin sounds "obvious". The context from which you're listening to it is partly defined by it. (I really don't want to get in to a "who is better/more important/whatever" argument. If choosing Led Zeppelin as a comparison bothers you, please substitute for taste.)
I was a huge fan and they were my first "real" concert in 1977, at the infamous Day on the Green where Bonham and Grant were arrested for beating up a BGP employee. Get off my lawn! :-)