I don't use the mouse views, but I am a rabid hat switcher!
Keyboard views FTW!

Welcome back Flyboy!
Do make good use of the 3 auto- trim options we have:
Auto- level - will do exactly what you expect it to do.
Auto-speed - sometimes called auto-climb but that is inaccurate to what it does. This will keep your wings level and your speed constant (set a custom speed with ".speed XXX"). If you have excess power you will climb, if not you will depend, but IAS will be constant.
Combat trim - trim you for level flight at the current speed assuming MIL power. Unlike auto- level, it will not bring you to a level flight, it will only change the trim to their theoretical level-flight position regardless of your current orientation.
The way I and many others use it is as a " quick trim". In the clipboard options set combat trim to OFF by default. Then when you want to trim in-flight, turn it ON manually (assign a toggle button) and then OFF again. Make fine trim adjustments manually as needed.