I oppose this,
Our tax system is like every other law in Atlasia; it is based on the US system until such times as it is changed, modified or overturned. I have no objection to maintaining the US tax system (with modifications brought about by one or two existing bills) All we need to do is simply codify the tax system to take into account these modifications. We don't need a commission to do that.
It would be nice to have a team to decide whether it is, as you say, best to simply use the US system or some other. And if we use the US system, what the respective rates are and how they stand after modifications in the past.