Not gonna lie, the only thing that looks interesting from the Dust Devils warbond is the EAT-700.
Everything else looks like its there to fill up the space.
The fire rifle is gonna be another Pacifier moment, where its better to straight up kill something with a better weapon than to bother with status effects (because they're bugged or nerfed)
The grenade wont be any better than frags, thermites, gas, stuns, HE or pyrotech.
Missile Silo is either the newest noob stratagem to make bots even easier if its the same as a 500kg, or a big meme.
The Harpoon gun...well, maybe next leviathan MO?