To be fair, the Engineer and Medic are limited in terms of attack-type weapons by the inherent nature of their classes...if the Medic is at the front lines, he should ideally be healing someone else, and unless the Engy is going all battle-mode with the Gunslinger, he's generally preoccupied with building stuff. The new Medigun should provide an interesting new dynamic, and I do hope that the Engy gets at least some love, maybe in the form of a weapon that enables a brand-new building variant.