Syncing has been a major issue between VRChat avatars for many years. Ensuring that other people see parts of your avatar in the same place—regardless of whether they’ve just turned your avatar on, joined late, or are looking in the mirror—is one of the biggest challenges for anyone creating complex avatars.

The lack of a reliable way to sync avatars stifles creativity and limits what users can do. What we need is a "Freeze to World" and "Rebake Offset" option on VRC constraints, or a new command that allows game objects or bones to be synced over the network.

Community-built workarounds for these issues have helped a lot (VRLabs has done some great work on this), but they come with their own performance costs and animator complexities, making them unsuitable for all situations.

World objects are cool, but not every situation needs a world-droppable campfire or DJ deck. For example, I want to be able to take the helmet off my avatar, leave it on the table, and have everyone who joins see it there.