In C1, Prophet found a way to make a Ceph weapon work with human tech and made the big frosty minigun.
Alien weapons in C3 are intentionally over powered and one time use. So what if Rasch found out how to "humanize" the Ceph tech like Prophet and made hybrid weapons? It would make a great dlc/update addon.
Here's my ideas:

CMG (Ceph Machine Gun): Like the feline, but fires two shots per bullet, and has a lower firing rate.
Let's pretend each feline bullet does 1 damage. The CMG would do 1 also, but each bullet carries half of the one. Two together makes 1 point of damage.
Each clip holds 50 rounds (totaling to 100 projectiles)
Could be used to spray a wide area and soften up a group of enemies.
Can use all feline attachments

Jolt Bracer (Shotgun): This is a small weapon mounted to the forearm. It fires an extremely short range scatter of about 5 bolts. The alternate fire is activated by holding the trigger and releasing a tight spread of three higher damage bolts that move about 13% further than the default shot.
Can hold three rounds at one time.
Attachments are Extended mag, laser sight, and muzzle brake.

AP mines: Simple explosives slot weapon. Drop it (not throw) in a spot and wait. Disappears when player dies and can be shot to destroy.

Hand Cannon (sidearm): Large pistol that carries only 2 rounds and 4 in reserve. After 25 feet of fly time the projectile explodes, working like a hand held flak cannon. Alternate fires a projectile capable of sticking to the target for about one second and does 30 damage over that short time all while leaving a short energy trail for tracking. Alternate travel time is instant.
No attachments.

Breeze (new concept): Fires like the M.I.K.E. but has a wide spread. When an enemy is in the air the gun can push them away all while dealing damage. Can be used to push teammates also. (you will get a teamkill if a teammate is pushed to their deaths) If the player is in the air it can be used like jet propulsion but you run the risk of going out of bounds or off a roof like on skyline. Can also blow grenades, rockets, and thrown objects away. Bow is immune.
No alternate fire or attachments and has a large 500 round rapidly depleting clip with no reserves. Cannot pick up more ammo.

Modules!

Commander: Allows you to give an earned killstreak of yours to a teammate on the bottom of the scoreboard. Can not give to the same one twice in a row and does not apply to maximum radar. To use you hold whatever button/key you normally use to activate streaks and a message will pop up telling you it was delivered. Does not level up and cannot be used with retriever. Takes the place of auto-armor after level 10.

Turncoat: Allows you to hack Ceph gunships through a 10-point hacking sequence. There is no assistance like the hacking module in the campaign and the time to finish the hack is very short.
Instead of aligning the hacking points like in campaign, you have random button sequences



Everything is unlocked after the first reboot.