The Grasshopper wasn't in the 70-tonner Facebook poll, just like the Awesome wasn't in the 80-tonner poll. Many of us suspect that it's already in the game, it just hasn't been announced yet. And the Orion was slaughtered in the 75-ton poll, even with the energy boat votes split between the Black Knight & Flashman.
I don't get why people vote for energy boats. I mean, every mech there is, is easily turned into one of those, but making energy boat into a blanced mech with decent arament is impossible.