An idea for 1.22 - The monumental update

Hello, I know whoever is reading this is probably tired and wants to get home, so I’ll keep it brief. As a long time player of Minecraft (10 years) I have always enjoyed exploring. One of the many highlights was finding large structures, so I thought of one. What I am suggesting is a series of monuments with the theme of a mob. These structures will be very rare, making them a very special find in any world, by this I mean around 10 are able to generate in a world (I am aware that a world is 60 million x 60 million). With a structure this rare, a needs of navigation will be necessary, a suggestion could be the second master trade for the cartographer, known to sell maps to woodland mansions and ocean monuments. A use for this structure could be rare loot such as ore blocks (similar to bastions) and rare items (nearly like end city loot but better due to the rarity). A potential use could be a new item which can only be obtained at this structure (to give it purpose, I’d say based on the mob so an enderman monument would have an infinite enderpearl as an idea). The design of this structure will likely be very tiring so for a change, maybe allowing the community to submit designs for individual mobs could allow for the highlighting of the building talent in the community (I don’t actually have this :)). This would allow for the re-implication of votes (but none is a nuicance). I feel as if this would make exploring much more interesting and rewarding. Remember brief?