@pico yep! Love Love always had the concept of anime/virtual idol and irl idol. It's really smart. You can sell double the merch, have live concerts easily and the look of the voice actors really isn't that important since they still have their anime counterpart.
EDIT: Are the voice actors for Love Live also idols?? Like were they hired under the expectation that they would also perform on stage or did they learn to do this for the job? If that's the case, that's really amazing?