Most people play the Scotch because they don't want to bother with the intricacies of the Spanish, or because they don't fancy to meet some Spanish lines on a particular day (but here the Italian is perhaps more suitable, as you can keep it simple with Bb3-d3-c3). Since it is Black who chooses the system, White has to be ready for a variety of mainlines, while Black has to be ready for a variety of deviations ; Black quite often has homefield advantage.
In your variation of the Scotch, White plays for long term advantage (better pawn structure, bishop pair) and Black has early activity due to faster development. White has to negociate some early pitfalls, and must solve the problem of its pieces (Bishop to g2, f4 to sustain e5, how to develop the queenside, which move order depending if you want to allow an imbalanced ending). The position becomes very tense, sometimes White is happy to let go of the e pawn in order to complete development and start playing on Black's weaknesses.
in a sense I feel that White is the good guy in the Scotch, whereas it is the opposite in the Spanish. But that is just the view of a Scotch player