Weapons & Equip I think there should be a new summoner drop from Betsy.

[AVELI]

The old one's army is not an easy event, but on the other hand, it provides you with a ton of new weapons, ranging from bows, to swords. Unfortunately, the summoner class is not included as the others are. There's no reason for a summoner to complete the final level of the old one's army, if not for game completion, so, I think there should be a new drop from Betsy, and it could be something like a new summoning staff, like a "Betsy Staff" that summons a smaller Betsy to fight for you, or maybe a new whip, that makes it so when enemies are hit, their defense decreases, or they explode, like an upgrade of what the firecracker does.
I think that would be a great addition to the game, because after Plantera/Golem, and even Moonlord, the Terraprisma ends up being the only reliable option, and low-skilled players can't get it as soon as it's available.