Yes, people are getting worked up about something that we haven't even read the details yet. Plus I still say you look at what a marauder can do by the bottom of their talent tree with a pair of vibro swords or what a merc can do with a HBR on auto fire at the bottom of their tree, and it seems to me they're both already like smallpox to minions.
I really think the once per game mechanic, and the fact it takes the HG out of the mix for 2 rounds, will give players some pause as to when to pop this.