For me it's mostly traditional, but I would actually love more complexity on certain aspects that were clearly designed for human math ease-of-use.
I agree. The PC allows more complex mechanics that match the themes more, and a good developer would use those. The problem I see is that Larian is not utilizing more complexity in the spirit of the core rules. They are dumbing down the rules and ignoring huge swaths of the PHB. So, I think your comments are actually in the opposite direction of what Larian is doing.