That being said, it looks like a great update.  Support for upgradable teleporters AND upgradable dispensers which, frankly, is something I think they’ve needed for a long time.  Engineers in TF2 are a fairly static class.  Build your entrance, your sentry, your dispenser, and then your exit.  Upgrade your sentry at various points in between and then sit there hammering away until an uber-Demo comes and knocks it all down.  With this patch hopefully it will provide more depth into what you build as an engineer.  Is it more beneficial to upgrade your teleport and let your allies get to the front lines faster or to upgrade your dispenser so you’re guaranteed to have a constant supply of ammo and metal?  This should add some (much needed) depth to the Engineer class.