User blog comment:Crimson Storm Mich/Future Units Preview v2/@comment-27740154-20170418164227

Quick opinion for Libera, Rhoa, Kafka OE:

Libera: Amazing unit :D She packs lots of useful BB management buff on her BB and SBB, the only problem is that you have to switch around to get all her buffs (Which is pretty annoying). Her UBB is practically useless.-. Her LS is not something I will use for hard content, and her SP is great I just hate how "Adds huge BB gauge boost effect to BB/SBB" is 40SP should be 30SP lah or lower :p. Overall amazing sub-unit as a DEF buffer and BB management role (Better Felice<?>). 10/10 would get. If only I have her

Rhoa: Just as I expected tbh, great offensive buffer unit and now I guess he is considered nuker(?) with his double ATK. Nothing much to discuss about him, he is just a Spark buffer with double ATK and DoT. The DoT seems out of place (not a big fan of DoT).-. kinda wish they would just add the Fill on Spark to BB/SBB directly not from SP. His UBB is not gonna be use at all.-. LS is alright not for hard content for sure, and SP cost is pretty reasonable nothing to argue. Overall great sub-unit with Spark buffs. 8/10

Kafka: She is alright.-. Not that impressive but is clear that she is a Xie'Jing type unit, which means an ailments unit as expected. Her buff is okay, I don't like how we have to switch from BB/SBB to get the EWD buff and Boost dmg to Ailed enemy. Also, I'm not that big of a fan for that HP conversion buff. Her LS is not gonna be use, and her SP feels like they hold back.-. Should just upgrade her Boost Dmg to Ailed enemy to 200% instead of 190%, and her EWD buff to 100% instead of 75%. Also why is her 30% to HP and ATK 20SP while Rhoa is only 10SP -.- Consistency Alim where is it. Overall meh unit, she will be useful if enemy is vulnerable to ailments but thats about it. 6/10

So, Libera and Rhoa are great sub-units, while Kafka is pretty meh (even though pretty cool design). There are certainly tons of better units than them, but for F2P they are amazing. :)