As it stand, the new 3.0 FBT feature exposes a major flaw with FBT: that your arm length and your height are assumed to be proportional to each other.

This leads to users such as myself being incorrectly scaled to their avatar.

One way this defect manifests is when a user has to modify their real height to smaller than their actual height to have their FBT pose actually scaled correctly. In Avatar 3.0 this leads to the player floating above the ground, forcing the user to use a playspace moving tool to reposition themselves with their feet on the floor.

The solution to this is to gather more data about the player so that the FBT pose can be scaled correctly, via adding an arm span option in addition to a player height option. Otherwise, a fix for being forced to input an incorrect height setting and then floating would be to add a player offset option ingame so that a floating player can be moved back down to the ground in-game.