Evoking the Allay instead of finding it in the wild

So this suggestion is based on the fact that the Allay and the Vex seem to be related. Not only do they look nearly identical, but their names play off a similar theme. "Allay" means to appease or soothe. "Vex" means to annoy or torment.

The Vex are not encountered in the wild. Instead, they are summoned or "evoked" by Evoker Illagers. Where they come from natively is still a mystery. 

If the Allay are related to the Vex, I think it would be awesome if the player could evoke them in the same manner as the Vex are evoked. Here's how this could work in-game.

The Player raids a Woodland Mansion and conquers it. In a new room, the Evoker's Sanctum, the Player finds a strange Totem in the form of an Allay. With this Totem equipped, the Player is able to right-click and summon an Allay. (This change would give the Player more reasons to find a Mansion.)

The Allay does not de-spawn, but instead lives inside a note-block it claims, much like a Bee living in a Hive. The Allay can be returned to the Totem by right-clicking on the Allay with the Totem. This will make it easier to bring a few Allay on a mining expedition.

An additional feature could be that the Allay and the Vex are natural enemies, and the Allay will fight the Vex.