Mhmm! The damage seems good and reasonable. Also, for the turrets, do they only get a faster rate or do they get a little more damage as well. I'm hoping for the latter but the former is just as good.
I know I wish they had more abilities for buffing the Eng turrets.This could make Eng more unqiue and be very important to have Eng specialized in certain things.
For example Eng #1 could be built simply as support with all the buffs while Eng #2 is built with capturing/holding objectives with Mines, Turret and Upgrades like (faster response time, larger attack radius, self-destruct, Anti-Hack) These are suggestions I made in a thread awhile back.
The self-destruct ability incase you were wondering was an ability I thought up where when it gets low on health it self destructs sending shrapnel out damaging all those around. The Anti-Hack was another ability I thought up which I thought would be cool for Eng to be able to purchase which when an enemy Operative tried to hack the turret the turrets self-defense system would kick in and begin electrocuting the Operative. It would not kill them or prevent them from hacking it would merely do a reasonable amount of dmg leaving them weak and exposed for the Eng or his teammates around to pick them off.
Anyways back to the point it would be nice to see things like this as players could be more specialized and it would add a more unique dynamic to Brink as there would be several ways for an Eng to be effective and help the team.