I knew going into this game that it won't be anything special and that’s what I got. I would call Luminous Arc a beginner's first SRPG. Basic in every way, be it story or gameplay.
The story has a lot of cliches that you would see in other games or animes, the characters are one-dimensional, but they are still somewhat endearing. The intermissions after fights give them more personality that you will not see throughout the story and is a pleasant addition.
The gameplay will not surprise you if you have played any other SRPGs.
The biggest problem I could say it had was that you couldn't move the camera in any way being on a 3D grid-like FF Tactics makes it very hard to see where you put your characters. Also, the buffs were not of much use, but very few games make buffs useful so it gets a pass. Use Leon throughout the game, he's like a cheat code.
In conclusion, Luminous Arc is a functional game that you can beat in about 15 to 25 hours, depending on if you want to get all the intermissions. It did not do anything innovative, but for a budget title and the first game created by Imageepoch, it could have been a lot worse.