If you have a
RemoteData it is often a good idea to try to unwrap those as early as possible.
userCard : Maybe User -> Html Msg userCard maybeUser = div  [ userInfo maybeUser , userActivity maybeUser ]
In here both
userActivy get a
Maybe User. Meaning that will need to unwrap this value several times in your views.
userCard maybeUser = case maybeUser of Nothing -> div  [ ... ] Just user -> div  [ userInfo user , userActivity user ]
Here the sub views take a
User, this makes most of your views easier to write and test.