I went from a Miata to the Fiesta because my dog was too big. After 4 years I decided I wanted something more comfortable, so naturally I cross shopped a Civic Type R, Stinger, and GX against each other because I am normal. I went with the GX after realizing my wife has zero interest in going...
The natural Fiesta ST to GX pipeline continues. I traded my 2015 performance blue Fiesta for a 2017 GX a couple years ago.
You don't need a diff drop for a 2 inch lift. I would suggest getting aftermarket UCAs so you don't have to lift, try to align, then order UCAs and take everything apart...