Scattergun
For Pack 2 we have the following ideas
StormShotgun: A shotgun-like blaster which shoots multiple smaller projectiles that have a more knockback power.
the grenade idea sounds pretty cool. If the heavy bomber was some kind of anti-vehicle weapon that would be pretty cool for sci-fi vehicles (plasma tank? MAS vehicles? You could basically host a planetside 2 server!)
Since pack 2 sounds more like a utilities pack (minus the shotgun) more than a weapons pack, maybe a third pack could include some more weapon variety? Light machine-gun, sub machine-gun, bullpup, explosive launcher (refer to anti-vehicle comment above.) It'd also be cool to see a variation of the armor in the planned features that focuses more on health at the expense of speed and jump height.
I like the sound of the glider idea. If a player were to jump off a ledge with the StormSuit, then activate their StormGlider they could easily traverse through a large part of the map potentially. Basically just take the script from the regular glider, maybe make it a little faster. It'd be neat to see some collapsing wings that fold out when you activate or something along those lines.
Overall a very cool pack, I'm sure I'll find something to host these with