What weapons did you upgrade, or plan to?

I refined the Dancer's Fan first! Performing Olivia becomes amaaaazing with Dancer's Fan+; She debuffs both the enemy and surrounding enemies for Def/Res -7, and she heals for so much with Breath of Life and the Breath of Life seal.

It will either be berkut's lance for my long time Effie project or Lightning breath for my other long time Fae project.

As for the special weapons, I'll probably go Dark Excalibur for Merric, because it seems like the most absurd and unreasonable thing that I can do.

Upgraded Ridersbane of my +4 Effie (the one that cancels enemy cavalry buffs) and now tanks buffed Brave Lyn way better as the later was the only problem for my Arena armor emblem team.
Next I upgraded Keen Blarwolf of my recently +1 Ursula for my future Black Fang dream team and for the same reason Jaffar's dagger gonna be the first legendary weapon to be upgraded.
*Edit: I forgot completely the healers, probably I'll upgrade my Lucius+1 Pain+ to Dazzling Staff effect as I already gave him Wrathful Staff from my Gennies.*
Next my four stars Durandal Eliwood +8 and then Michalis or Eldigan. I wish I had Ephraim but I was constantly unlucky getting him since the start of game.

I gave my my genny dazzling panic+

Rogue Dagger+ and Smoke Dagger+ on my Felicia are my current ones, both have Speed +2 right now but I’m also considering getting the Resistance +3 versions when we have extra Refining Stones.

I’m also considering Deft Harpoon+ for my Summer Robin since the buffs are so nice for her, but her Firesweep set is perfectly fine right now. Keen Gronnwolf+ might also be a potential project if I decide to build my regular Robin as well.

Although, my next project is actually Dragon Breaths on things like Fae, Corrin, or Nowi and Staves for my Bridal Lyn or perhaps Azama/Priscilla (still looking for Elise and Genny). Slaying Edge+ for my Caeda and Wo Dao+ for Olivia is also a possibility.

In terms of Legendary weapons however, Hauteclere is where it’s at for me since my Minerva and Michalis could definitely use that buff, but other than that I think Fujin or Siegmund will be next on the list. If only I had a good Julia or Jaffar, I would have picked them.

I went for Dark Breath + with the def boost on my F Corrin. She's a monster at debuffing, chipping and baiting physical units. Even greens.

Went for Lightning Breath+ Atk on my +Atk,-Res Nowi.

Planning on going for Fear+ for my Sakura next.

I upgraded Fae's Lightning Breath + (Defense) and now she has become an ultimate tank. She can tank Blyn, Reinhardt, and almost any other unit. The only thing she can't tank is a red falchion user (yes that means she can tank a hit from Naga). I plan on upgrading Maria's staff next but I'm not sure which weapon I want it to be...

Pretty sure the winner of my first upgrade is gonna be Fae's Lightning Breath, so she can be the ultimate mage-bait. Also on my list are Ninian, Priscilla, Mist, Lukas, and Summer Tiki, all with their native weapons. For the legendaries, I have dreams of building Seliph into a discount Sigurd since I never got him.

Berkut s lance ++

Gave Priscilla Dazzing Panic+.

No regrets. She is a beast along with the Wrathful Staff skill.