My Idea for a Fire Emblem Heroes Crossover

Warning! This Question/Fanboying contains some spoilers to Xenoblade Chronicles skill trees, arts, and characters. If you haven’t played the game do it now, it’s a great game.

So a crossover in Fire Emblem Heroes seems very unlikely. However if one were to happen I would like it to be a crossover with the Xenoblade Chronicles franchise. The game has so many good moments (which aren’t gonna be spoiled here) with great character, great story, and great gameplay. With the 3rd game out why not give the characters from the first game a try in the Fire Emblem formula.
I’ll be using the first 2 characters you’ll meet in your Xenoblade Experience.

Shulk
Weapon: Monado Mt:16 Skill: Unit may dodge an attack 15% once in a while
Support: Monado Armour: Grants Def/Res +5 to an adjacent ally until the end of next turn.
Or
Monado Enchant: Grants Att/Spd +5 to an adjacent ally until the end of next turn.
This support has a cooldown so there isn't any spamming.
Every other turn after use it will be usable again.
Special: Monado Buster: Grants 100% to Atk lowers foe’s Def/Res by 5 until end of next turn
Or
Monado Cyclone: Attacks against Res instead of Def, foe can’t counterattack this turn and is prevented from moving more than one space through their next action.
Charge is 5
A Skill Battle Soul: If foe’s HP - unit’s HP is ≧ 0. Special cooldown charge +1 attack. (EX: A 47 HP Amelia against a 37 HP Shulk skill triggers)
B Skill Forced Mercy: During Enemy Phase if unit is attack (sword, lance, axe, magic, etc) next attack by next (or same) unit will deal 80% less damage.
C Skill Ultimate Teamwork: Allies 1-2 spaces away +2 Atk/Spd through their next actions until end of next turn.
Or
Chain of Friendship: When the unit is right next to an ally they gain +5 Atk, if there is another ally next to them +3 Atk (the chain will continue with the last unit gaining only +1 Atk) until the next turn.

Just as an FYI all of these skill aren’t inheritable due to their uniqueness to the character. The Second character is…

Reyn
Weapon: Gunlance: Grants +3 Def. Unit may reduce an attack's power from a foe for 20% of damage dealt once in a while.
Support: Magnum Charge: Can sacrifice special charge to gain
+3 Atk/Spd/Def/Res. Unit still gets to move.
Special: Sword Drive: Grants 200% of damage dealt
Or
Last Stand: If Hp > 1, survive a lethal attack with half hp remaining with +3 Atk
Charge is 4
A Skill: Reckless Courage: If unit is at 10% Hp or lower grants +10 Atk/Spd/Def/Res
B Skill: Against the Odds: If against a green unit, the weapon triangle is slightly weakened. (Sidenote: this is not a cancel affinity skill. This is the case due to Reyn Still having the advantage against red units)
C Skill: Shoulder to Shoulder: If this unit is adjacent to another unit all units will heal 10 HP at the start of the turn.

For both of these characters, I used actual ingame titles to the character’s skill tree and arts. If you find these skill a bit overpowered that’s fine. I just wanna see some kind of crossover in one of my favorite mobile games. (Useless Fun Fact: Yo-Kai Watch Puni-Puni has if not one but two crossovers).