Well...
Yes, if you were to push another character into the mega attribute range, then he or she would get a free enhancement; albeit temporary. As far as boosting novas, then, no, you wouldn't pick their enhancement. As beings tapped into quantum energy, they would determine how that energy is used. After all, it is a reflection of his or her personality. Baselines are another matter. You can determine if the baseline you boost has an enhancement, and which, but you would pay the additional quantum (one time per boost) if it is required. Or, alternatively, since this power only affects a few attributes at most, you can select an enhancement that is permanently assigned to a baseline attribute boost. That would not require any additional quantum costs.
