Complacent Gaming Syndrome: The game has individually-upgradable weapons. As a result, the player will likely use one regular-duty post-movement weapon that does not consume ammo or EN, and one "big gun" for dispatching bosses or other heavies.
Scrappy Mechanic: Shin adds cut-ins, close up character portraits, and long cutscenes to its attack animations. This turns out to be a double-edged sword because like older SRWs up to Super Robot Wars Alpha, animations are still unskippable. When running at default speed, the load times and animations are atrociously long and unbearable. Much of the poor reputation of Shin stems from this.
Seinfeld Is Unfunny: Shin hasn't aged particularly well compared to other older SRW games. It doesn't help the pilot and series roster is relatively small compared to Super Robot Wars 4, and it doesn't have much at all in the way of new Spirit Commands, pilot skills or unique gameplay features. If comparing this to modern installments, Shin might be a boring experience.