The art for this manga was super expressive which I loved, but the girls were a bit 'sameface' at times. At the very least Angelica and Livia have been hard to tell apart and the capture targets...well I think the prince and company are like that on purpose. lol
But yeah, that's why i'm not really bummed IF we get a new artist, though I think they meant author literally. It's true we risk having art that's worse, but nowadays how many "bad" artists are there, really?
Last genuinely 'bad' art I remember was in Onidere, and I wouldn't change the art in that manga cuz it grew on me. Same for Angel Densetsu tho that goes back further.
What I hope is that if we get a new author they stick to the story similarly to how this author stuck to it. Because he or she did a good job with pacing for the most part.