This isn't a LP of the original FE6 but of a patch called redux hack. It fixed some issues from the main game like balancing the stats and growthrates of most units and improving axes, lances and bows and make them as accurate as in other games. That means that no one should be disqualified in this game anymore. Units like Gonzales, Sophia and Wendy should be seriously usable now. However I have to say it's also the first time that I ever will play this hack; it's just what I expect. I'll mention some differences of the party members between the original game and this patch.
Difficulty: hard
These units have to be used in each chapter after they joined and must be kept alive.
Maggy Lewd: Fae, Gonzales
Glaceon Mage: Wolt, Tate
FrostyFireMage: Sue, Zeiss
Sophia: Sophia, Cecilia
Claimed supports:
A: Roy x Wolt
B: Roy x Cecilia
A: Elphin x Cecilia
A: Fae x Sophia
B: Sue x Wolt (if possible)