A new wild world will have enough room for new items since most items can be gotten as mob drops and about 60% of a world is ocean ( Biome ). Hearts of the sea and all versions of coral will need either a way to be renewable or the server will most likely quickly run out.
Unfortunately, the wild would have to be simply ginormous to allow for totems to not be so rare since mansions spawn tens of thousands of blocks apart from each other. For 40 players to each have they're own totem, the wild would have to be probably at least 500,000 blocks wide. The problem with increasing the size of wild is that it means there will be a much longer span of time before all of the wild world is explored, meaning the server will be slowed down during that time by new chunk generation.
