Some of your suggestions, for merc nation or awakened esria or such are really good. I bolded everything that is too op and underlined any changes that I think would make them fair.
CATH ELITE FENCER MIRELIA ARE NOT UNDERUSED. Go back to your garbage hold.
Light Heierrat Fighter:
Rankup: Gowen 6+:
HP+10, atk+10, agi+1
Deal damage atk+10 to target unit not in range. This unit gets at=0 until the end of next turn. And then, move this unit to target open space. 0 SP.
Open skill: On your feet--target friendly mercenary nation unit is revived, gets max HP+10, HP+10, atk+10, and rank-up.
Start skill: The general's cunning--subtract AT-10 of target friendly mercenary nation unit besides this one from the HP of target enemy unit of agi 4 or higher.
auto skill: this unit and units to the left and right heal 15 HP.
Lvl =2, HP=30.
Open skill: conditional SP=0, you get 1 SP next turn.
Counter skill: gains focus for this turn.
Action skill: conditional focused disengage target friendly merc nation unit.
(In other words, worse Inzaghi)
Target Gowen unit gets atk+20, agi+2, and lvl +2.
Song for a hero:
Condition no allied units->you control less units.
Max HP+50/HP +50->HP +30, DF+10
Beast Emp Rivera:
HP 70->60. Level=5
Sword of orthos: subtract->subtract max HP
New action: beast slash--1 SP, subtract AT from row of enemy units in range, subtract 30 from HP (yes, counter will heal it unless she's below 30 HP, then she's dead).
Auto: do dmg->subtract
Fire dragon: auto->start
auto skill: vulcanbreath--subtract AT from all enemy units in range
Auto->start. Deal dmg->subtract
Primrose (non EX)
Open: all units get lvl +3
Open: condition gowen 5+: all units get lvl-1. 1 SP.
Open skill: grand freezing--engage all non-archmage units for this turn and the next turn. 1 SP.
Greater freezing: random->targeted. 1 SP.
Greater Ice storm: subtract 50 from max. 2sp
Change to: conditional: Falkow 3+: move target unit to target position and then engage it. You get SP+1
Change to: swap enemy units in spots 1-2-3 and 7-8-9. Engage all units moved this way.
Either: 2 SP or grimcount x10
DF+5 (stop spamming gafc and use that sergis plz kthx)
Open changed to: conditional SP=0, you get SP+1 next turn (Lawtia already trashes Falkow hard enough, thanks).
Mage Knight of Regus:
Atk 20->Atk 30
Grimbane: Banes 2.
Conditional unit lvl <= 5: remain on after revive
Atk 0->atk 10
Slash->double strike: deal atk to a random enemy unit in range. This skill is repeated twice.
Crest Gale Fencer:
Lvl =2. Only works conditional Lawtia >=3
auto: atk+10 -> atk+5, HP+15
Action: atk+10, and return elemental burst from RFG to file. Get SP+1
Auto: perm at+Lawt x5, heal gowen x5, and then get additional atk+Lawtia x5 for this turn. (AKA total is Atk+Lawt x 10, 5 of which is permanent)
Awakened buster: 2 SP, agi-2, then gets max HP + 50% and is fully healed.
Double sword strike: 0 SP
Open: random->targeted. 50 to enemy->60 to enemy
0 SP revive
Awakened swords: decreases Lawtia by 1. 0 SP.