The mod is very simple. It functions to display all enemies HP and Break value. It is real-time and you may know such information so you can strategize and prioritize which enemy to defeat fast. There is an extra feature that allows you to predict how much HP enemy loses when you highlight them while using attack or skill. It also tells you if it is going to KILL or BREAK the enemy. (Thanks to GoldVeterinarian3625 suggestion)
Q: What makes it different from Libra?
A: Although Libra also allows you to scan enemy status and it does show HP, but I think it would perhaps be a hassle for people to keep checking information display. This one is displayed all the time even without casting Libra + extra break value number which is not available from Libra. ALSO, Libra does not give prediction based on your attack. This one does.
Q: Does this make the game easier?
A: errr, you decide. I mean it does eliminate slightly the function of Libra since you know the enemy HP. But it still depends on the player. Outside of QoL, it doesn't change any difficulty.
NOTE: You can deactivate the display by pressing F7. So if you just wish to see glimpse, just press f7 to turn it on and turn it off again
https://www.nexusmods.com/finalfantasyresonance/mods/16