New Shipping Manager bypass until post-holiday?

I've been struggling with the new Shipping Manager (ShipEngine?). There are so many things wrong with this feature that I continue to use the old experience. Now I see that as of Dec. 7th we will be forced onto the new interface. This is our busiest time of year. As a small business, time is money.  Using the new ShipEngine is a waste of time because I cannot do the tasks I need to ship my orders. Here are some examples:

1. Package Dimensions - if I choose a FedEx OneRate Envelope from the ShipEngine pulldown menu, why do I need to enter the dimensions of the envelope?? Same is true for USPS packages. WASTE OF TIME.
2. UI doesn't allow you to view/compare the cost of various services at one time. WASTE OF TIME.

3. Why show Stamps.com USPS options differently than normal USPS options? You have my information when I open the UI, so only show me what I need.  WASTE OF TIME.

I can go on, but I know it won't change anything. Prepare for disruption courtesy of Intuit.