If it works as intended, it should make SL interactions more intuitive and efficient. Granted, stringent safety measures will be required as the improvements can be misused by griefers. But these problems are no different from what we face in RL with spam messages and account breaches, and can be solved in similar manner.
Another important issue I can see is not having the same level of precision with a neural interface that we have with keyboard and mouse. Maybe we can learn to adapt, or use AI to focus the neural instructions, or pair it with VR controllers to get the best results.
In spite of the caveats, I'm certain brain-computer interfacing is the way forward and would definitely try it.
On a lighter note, our pets would be able to join SL too 😆