I haven't watched idol anime enough to know which one is an empty copy and which is an innovative masterpiece, and because it's not my favorite genre I think I'll never get to that point. But even if I don't know which category Re: Stage fits into, I would say there are enough reasons for any Idol anime fan to watch and enjoy this it. The story is pretty basic: girls who dream of being idol but can't, or give up for some reason, can finally realize their dream after they meet and convince themselves(AS AWAYS). Also don't expect much from the drama, there are some,but mostly standard character developments and some slightly sad moments that some people can connect with.

The art is amazing. The character design is unique, kawaii and well made. The animation is good and all the dances have been mostly 2D(some distant shots are CGI but isn't bad). The show also have a lot of cute and fun moments provided by this visual quality. The use of CGI is minimal and almost imperceptible(Bus rims and as I said some distant dance shots). The backgrounds are good.

The sound is good, but not remarkable. The musics were good too. The singing of the characters themselves din't feel very natural(maybe it's only me) but was not bad.

The characters are very basic and mostly one-dimensional but they are fun and also work well together. There are several eccentric characters in the series that even if they have no special characteristics, give the anime a special spice. Inside Kirare the 6 girls split into 3 affinity subgroups that have excellent chemistry (although this slightly harms the overall chemistry).

It's a Enjoyable anime to follow. It has a lote of cute comic moments. It's a little cartoony sometimes(super hacker), which I disliked, but it's not critical. The worldbuilding is pretty basic, although the technology factor is a bit ahead of reality. The fact that it happens in elementary school is just a gimmick, but helps in the cuteness factor. Overall if you like cute girl anime or idol anime you will probably enjoy it. Give it a try at least for the above average treatment this anime has received.