RNGSOMEONE

Hey. I've been trying to hack FE4 myself and I have a question for you. It seems that Yune is able to remove the restriction on Holy Weapons being sold in the pawnbroker, thus making it possible to pass them between multiple units. Do you know how this is done?

You know what's better than expendable Gargoyle cannon fodder? Expendable Witch cannon fodder. Provided you can actually beat Marla, that is. Terrain is nothing compared to a swarm of expendable magic users.

Your first healer on Alm route is Tatarrah, though he is a Samson to Delthea's Arran. Delthea also can promote, even if she lacks her normal spellist, as she is still classed as Mage and promotes to Priestess, which gives Recover. Tatarrah is stuck with Fortify which is expensive to cast. Nuibaba is the next healer, also locked to Fortify and no more are obtained on Alm's path. Recruiting both enables Fortify spam strats, but also makes it difficult to make use of Nuibaba and Tatarrah's good magic damage. Otherwise, recruiting Delthea and promoting her to Priestess is best healer possible, as Recover is only 1HP cost.

You can still get Jedah's Dragon Shield pretty easily. Just have all your cantors spam summons to get rid of Jedah's immunity and then try to nuke him down with a combat art from promoted Blake.

And Medusa has 1-5 range, or 1-7 with Magic Ring. Grima just became one of the easiest bosses because he won't move if you're not in range, but you can just outrange him with Medusa.

This looks fun. That being said, here's what I can say based off of your post. Act 1 Dozer has a Dragon Shield. He also has Act 3 bases. You need to put some nerfs on him or the Dragon Shield or he will crush absolutely everything. Recruit Fernand when he shows up, as Berkut will show up later to be recruited. Recruit Berkut on his second appearance (3 Paladin map) and recruit Rinea in Act 5 to get all three while under the 1 recruit/map rule. F!Delthea is the first unit recruited that can teleport (though IDK whether or not this retains when hacked to player control, as Teleportation is technically a personal skill and not a class skill of Witch/Vestal). Given the lack of any Cleric/Saint recruits, she will probably be able to cheese stuff by warping in to Aura a boss to death. Also, she's probably better than Tatarrah because she has mobility and you get better magic users later like Marla, Hestia and Nuibaba. Celica has exactly 1 recruit in Act 2 in the form of Barth, which means that Celica has to get through the graveyard as well as half the seaway ALONE. Celica might want to take Mae/Boey's food as well as some way to self heal... Recruit Deen, Skip Sonya. Celica gets plenty of good magic users in the form of cantors, so she doesn't need a mediocre mage who no longer has a good spell-list. Deen on the other hand is at least decent with Dread Fighter promo gains. Mikhail is the first unit recruited that can infinitely summon reinforcements. Since he can summon an infinite supply of flying cannon fodder, he can pretty much trivialize the entirety of Act 4 Celica. Marla is the first unit recruited that infinitely summons witches, which is to say, magic reinforcements with infinite movement. Just park her in the back, summon for a few turns and have the expendable witches all zerg rush the enemy on a single turn for maximum effect. Hestia also shows up on Rigel Falls, and she's way better than Magnam for the same reason despite having the same stats as Marla. Nuibaba... breaks the game. Medusa is completely bonkers with base 1-5 range, and with the Magic Ring she joins, it gets bumped up to 1-7, letting her hit Bow Knights or even GRIMA without being countered in return. While she lacks Teleportation and only has 4 mov, Fortify makes up for it and just about any threat can be cheesed by a hit with Medusa followed by a swarm of magic attacks from Marla's summons. Aside from the OP witches, Alm Act 4 gives him a decent supply of mediocre physical units. Then Rudolf shows up as the Gotoh and he can steamroll Act 5 with either a Silver Lance or Dragon Shield. Celica Act 4 gives her a huge supply of Cantors, and while no witch-summoners join her, swarms of Gargoyles and Necrodragons fix that issue. Also, how will Jamil Upheaval work? Of the potential recruits in Duma's map, Gharn is probably the best, since he also has Medusa, which is probably more valuable than Duma. Overall, Medusa + Expendable summons means that difficulty simply ceases to exist once you get them.