Wish I could create not only Default, **VR-Basic **and Empty Level
But you can 
Simply save one of your maps as “MyTemplate” and copy it every time you need to quickly start work on new map.
You could built-in Developers folder to store such maps 
You can change the Startup Map in your project Settings.
Oh yeah, and put the shortcut on the desktop you forget ~_~
We already have a WHOLE pop-up window, someone must to keep going develop it further, as well as other small usability things. Without them, the using of the UE4 becomes a pain in the butt, almost like 3Dsmax.
I do not want changing defaults, which are useful in some cases
Yeah, custom template maps would be a useful feature. +1.
Of course there are workarounds (particularly easy ones in this case) but that’s not a good reason to not have a feature!