I didn't mind those at all. Considering he's usually a "point and shoot" character, he needed a visual to show him exerting himself other than just crinkling his face more and the fluctuating energy lines conveyed that well for me. I didn't think it was perfect, but I appreciated that it actually looked alien.
you are right. disney seems to be making up with the mandalorian, rogue one, and now they have patty jenkins on rogue squadron. plus the different cgi tv series.
makes me wish that disney was handling the gl franchise. there seems to be sufficient star wars content in movies, tv series, and video games.