For my mod I opted for modern growths.
In fact, I didn’t even know that there was a distinction between these two.
To create a good balance you have to take into account many factors.
Class, Weapons, Terrain Bonus, Triangle of weapons, Level Up, Max Stats, Base Stats, Enemies.
For classes I have increased the difference between their base stats, giving all base characters the same bonuses + the class bonus which is more different for each.
Weapons are more different
Iron Sword HIT 90 POW 5 WGT 4
Iron Ax HIT 80 POW 9 WGT 10
Character: HP\LCK+5 STR\DEF\RES\SPD\SKL+ 2
For the Terrain Bonus I reduced the EVADE bonus.
EVD+10 DEF+1 RES+ 1(Forest)
For Triangle of Weapons, I reduced the dodge bonus and increased the damage and defense bonus
EVD\HIT+ 10% POW\DEF+ 2
Enemies: You must not forget about the enemies that have an important role in the game, you cannot give a General 20 DEF AND 0 RES Because his role is that of Tank, otherwise the game would become too simple, you just need to use a wizard to destroy him.
For the Level up I made it identical for each character, modifying the bonus you get with a promotion.
Character: HP\LCK+60% STR\DEF\RES+30% SPD\SKILL+40%
Myrmidon\Swordmaster HP+ 3 STR\DEF\RES+ 1 SPD\SKILL+ 3
Fighter\Warrior HP+ 5 STR\DEF\SPD+ 2 RES\SKILL+ 1
For Max Stats( the game use level up random) I have set maximum peaks that a character using a certain class can reach.
Swordmaster HP 45 STR\DEF\RES 21 SPD\SKILL 27
Warrior HP 55 STR\DEF\SPD 24 RES\SKILL 21
For Base Stats I have significantly differentiated the bonus you get by setting a class for a character
Myrmidon HP+15 STR\DEF\RES+ 3 SPD\SKILL+ 9
Fighter HP+ 21 STR\DEF\RES+ 6 RES\SKILL+ 3.
This way each class will have advantages over some things:
Myrmidon: Always double hit, high evade and hit but low damage and resistance to enemies attack he depend a lot from Triangle of Weapons and Terrain Bonus and their weapons end very fast
Fighter: Very high damage and good resistance to attacks, it can survive even without using Terrain Bonus but it depends a lot on Triangle of weapons to have more accuracy that would otherwise be too low.
What I mean is that it depends on the style of play and the balance you want to create, you have to take into account a lot of factors.
In this way, even if your characters will not have unique level ups, they will all be different and you will have to use them in the right situations, rewarding your strategy in battle.
The myrmidon will only have to be sent to attack if he has a protection of terrain bonus or a weapon advantage.
The fighter instead will be more comfortable having more resistance to enemy attacks but you will have a lower chance of hitting the enemy and inflicting serious damage.
Ah I’m talking for my FE 6\7 mods for FE 8 I will think about it in the future.
That game adds skills, I hate skills in fire emblem, it will be a mess to balance that if I decide to work with it in the future.