Sorry, and all, but it's a toy. MSFS is a toy as are all of the flight planning packages. Mine frequently plans the wrong way down one way airways, takes me 750nm on a 200 mile hop etc etc.
Until ALL of these issues are sorted out I would suggest such a scheme would be no good for real life training. Having said that, I saw an airline on telly using MSFS as a proper simulator, must remember not to fly with them.
Gawd help us all, some simmers get the rest of us a bad name by posting on the other parts of PPRuNE and claiming knowledge of things technical and professional, please don't start here as well.
Doc C