Aight on the subject of zombie fortress, the engy is like that for obvious reasons.
1. If they were to enable dispensers, how on earth would the zombies be able to do literally anything? Ammo + hp to whoever is standing by it is a bit too strong, don't you think?
2. While on the same subject of the dispenser, it acting as a barricade is perfectly fine, the survivors will have a chance to fight back while at the same time not completely destroying the zombies.
3. Engineer as a class itself is viable in zombie fortress, you just need to know where to properly place your buildings and such.
4. Engineer is a support class for this mode or tf2 in general rather, so there is really no reason for a buff/change to him since hes fine the way it is. ;)
Saxton hale---
Ehhhh..There are still quite a few bosses, but you can't really change what bosses people like to play and what they don't like to play, and plus, if most of them were never played, why keep em? o_O