MEAMP Weapons

In the main ME:A MP thread there has been some discussion of favorite weapons. However, since I think the success of ME:A MP is going to depend largely on the gameplay, and since the success of the gameplay depends greatly on the playability and balancing of the weapons available, I thought a careful appraisal of our preferred firearms is in order:

1. Which ME3MP weapons do you insist be made available in ME:A MP? (Meaning PRE-ORDER CANCELLED!! if not available)
2. Which weapons do you want to be left permanently in the Milky Way?
3. What new types of weapons would you like to have available?
4. How important should heavy weapons be in ME:A? How about grenades?

Obviously since the Andromeda mission leaves before/during ME3, that should theoretically preclude some of the ME3 weapons from being available (favorites such as the Javelin, Black Widow, Carrier, Talon, and Reegar* were introduced in ME3) but the series generally played fast and loose with logic and continuity** so we could end up with all the best guns anyway. On the other hand, one (such as I, the Saikyo Master) would assume the organizers of the Andromeda Mission would load the team up with all kinds of cool experimental prototypes. All I'm saying is, we'd better have some Kroggen Warlords aboard because I'm all about weapons that only the richest and most powerful warlords can afford, if you know what I mean, ha ha ha ha ha!

Hat tip to Beerfish and Cirvante  and N7 Swan Killer; we've already seen a few weapons in the gameplay trailer, most prominently the Purrana, a Dojo-endorsed^tm weapon, as well as the Avenger, Carnifex, Reegar, Revenant***, Particle Rifle (?), and Widow/Black Widow.

My extremely important opinion follows:

1. Besides the Preferred Dojo Firearm, which I understand is making a glorious return, I think we need to see the return of the Claymoar, Mattock, Predator, Avenger, Phaeston, and other "classic" ME weapons. There ought to be a couple weapons for each race participating in the mission (thus the return of the Adept and Disciple or similar Asari weapons)
2. No need for the Adas, Reegar, Carrier, and anything heavily pug-abused. Honestly, I don't think it's that realistic to include that many Derperus weapons even though there should have been about one googolplex of each in the galaxy by the end of ME3 at the rate the Illusive Man spammed out his goons. The Katana, Shuriken, and other non-damaging junk that nobody uses outside of challenges.
3. Equippable melee weapons such as swords, axes, chainsaws, small appliances, etc. But also keep omniblades and bayonets available on ARs, SRs, and shotguns. Not sure how/if this will work out based on what the trailer depicts.
4. I'd prefer multiple heavy weapons with varying effects as seen in ME2. I also think it would be fun if heavy weapon damage could be toggled to affect other players, but I don't see how that could be done without placing it in a separate PvP mode. To say nothing of the endless trolling potential. On second thought, forget I said this.

*I'm only kidding. ^Maybe
**I mean equipment logic and continuity. Except for all that story stuff that didn't make sense, of course.
***I'm not gonna let you down. See below.

TL;DR Version:

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Teh M-76 Revenant 

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YAAAA-HHHHHHHHHHOOOOOO!!!!!!

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Don't ask me who this "Dan" guy is, BTW.