Finished my first playthrough. Overall, I liked the plot a lot, particularly with how they handled Rayearth, Gun X Sword, and Prince of Darkness stories. And even though Infinity story is whatever, just the fact that it exists and allows an adult Koji to interact and reminisce with adult Amuro and adult Ryoma made for a lot of fantastic moments. And, even being post-plot, G Gundam and Domon were nice in how they carried the plot and integrated with the other revenge-based stories. Spike's interactions with practically anyone were also really on point. Mixing both Aura Battlers plot and characters with the Rayearth setting worked pretty well, too.
About the only stuff I disliked was some of the new animations, which ended up just being underwhelming. Shin Getter Dragon and Mazinger Z's final attacks, in particular. Some of the series casts were pretty forgettable, mostly Mightgaine, Tryder, and Expelled from Paradise. The latter is especially a shame since its a debut series, but oh well.