For simplicity's sake Queen of the Undead is Qou and Flesh Lotus Queen Is Flq.
Firstly I understand that 8star>7star (excluding the panzer case) so Quo>Flq and justly so However I believe the gap is to huge as Quo boasts over double the hp of Flq whilst having marginally different atk and rec stats. Doesn't stop there though, Quo also boasts the same skill type(Poison) with the same cool down but far more powerful, not to mention her leader skill is actually useful in some situations unlike Flq. Sure Flq's skill can be used effectively but never will it be a top strategy in her hands. In light of all this I humbly suggest you give Flesh Lotus Queen the heavy poison damage skill. I'm not asking for any rebuffing of the great Queen of the Undead, who even if Flq is buffed as I suggested will still boast greater than 2x hp of Flq and have a better leader skill. I certainly don't believe this would cause any power trips, it would just make the two cards balanced in harmony with respect to the 8starvs7star relationship they share in being poisoners. Thank you for reading, give me your thoughts.