Larian and WOTC seem to have a pretty good relationship. Has there been any speculation of BG3 syncing with DND Beyond.
In some respects it could be a revenue stream for both companies.
A BG3 player wants this or that species or feat in the game they could buy it.

What I would want it for mostly is for character management and development

Also it could be a good way to connect with others for game sessions etc.