I haven't played yet (I will tomorrow), but the changes in the announcement seem fantastic. It's exactly what needed to be done to balance things. The only complaint I still have is that the Autogun family is still useless. If we can't get a second volley, can we at least get a quicker reload? Standing for 1-2 seconds firing and then 3 seconds to reload leads to a quick death. Either that or allowing us to move while firing. It seems silly to have a completely useless family of guns.
Tier 1 still seems kind of off, though, if you'll look through a beginner's point of view.