Hi. Some of these may be good, some of these may be bad ideas, I don't know, you guys judge, and if i'm really really lucky (winning the lottery lucky), a dev will stumble upon this thread and maybe, just maybe (winning 16 lotteries in a row lucky) he might like one or two of these ideas.

A heavy sword that does piercing damage. Give it thrusting attacks, but very slow-2 hit. Charge attack is a literal charge which knocks enemies aside/back. Call it a Lance, if you will.

Light Autoguns - Fires three shot bursts, and allows you to move while firing. Either two or three bursts per reload. Charge attack fires quicker than standard autogun, but less rounds overall. Give us upgrade paths that lead to two more damage types.
One more specific damage Autogun (not piercing or normal).
One more specific damage Magnus line (not piercing or normal).
Two specific damage Blasters (not normal) - Reason: For those of us who prefer standard blasters instead of alchemers (bounce in IMF), Catalyzers (too slow and too specific role) or Pulsars (knockbacks that kill team mates or push enemies out of range).

Cluster Bombs - First explosion does very little damage, but spreads multiple bombs over an area, each bomblet does even more damage. Shadow and or Elemental?
Proximity Mine - Long charge, lasts 10-15 seconds, if anyone steps within a set radius, the mine will fire in one-two seconds. It bounces up, and fires shots in all directions, ie. Bouncing Betty style. If not, it explodes anyway. Piercing and something else?

A silvermail helm. Or something that matches silvermail's defense stats. (Because there are no Piercing/Shadow helms in the game)
Ballistic/Riot Shield. With something like Medium CTR or Damage to guns. Give it something other than piercing defense.

And just for laughs,
Spiral Cannon - One shot. Large damage. Charge attack points the cannon upwards, and fires multiple shells that land a specific distance away. Preferably in a circular pattern, but a semicircle is fine too.