Often on my layout tab I'll have more than one viewport when showing sequential slender areas such as a river or a roads. And I often put a key map on each of my layout tabs. When copying a viewport within a drawing such as the keymap viewport I have to go through and lay freeze everything within the copied viewport again, because all the layers defaulted to being thawed. I feel as though the default should be to have the VPFreeze layers and viewport overrides be mimicked from the original to the copied viewport, not be default thaw all layers and restoring viewport overrides. It is much easier to clear viewport overrrides and thaw all layers then it is to select certain layers and change attributes and/or freeze them.
This would be a huge time saver.