Interesting. Looking in from a country with a smaller lower house, I think members in the US are already so numerous they seem to fade to the background and their survival becomes mostly about party politics not making a good impression on their district. It's not like most of them could make a good speech while most members are present and listening. Only senators seem individually important enough to make a name for themselves (with the exception of the speaker etc).
But I've never lived and voted in the US so maybe I'm missing something important here.