As of writing this, the current toolbar ui works great. It is clearly setup for a smooth even workflow. On the other hand the new toolbar ui breaks that flow by "sorting" everything into seperate tabs making it impossible to work as efficiently. I personally think that a fully customizable toolbar would solve these problems. This toolbar ui would include the option to keep your original setup (with tabs where they currently are) but also allow for custom tabs and sorting. That way the legacy users aren't just forced into an update that would reduce productivity.