Thank you for the comparison and the mentioning of Sky Dolly. Full disclaimer: I am the author of it. 
Sky Dolly’s Location module indeed just came out as a “side quest”: recording/replay being the main functional area “teleportation” just felt like a natural extension, one that I personally always wanted to have from the get-go.
I wrote a how-to about starting anywhere on ground, including the option to start “cold and dark” which essentially just does what “CTRL + SHIFT + E” would do, that is “shutdown engine”:
Read about it here:
While this talks about helipads the same steps apply to sea locations as well. In fact, Sky Dolly comes with over 100 hand-selected default locations “out of the box”, one of them being the starting location of the famous Spruce Goose, in the harbour of L.A. - and yes, “cold and dark”
Sky Dolly is indeed a “stand-alone desktop application” and I have no intentions of any “in-game integration” (except for a toolbar extension perhaps later down the road that would allow quick access to “record, replay, stop/pause” etc.). So if you are looking for an integrated location management, conventiently accessible via the MSFS world map then Location Manager is what you want:
Happy flying!