I'll do my best here to provide feedback and not ideas as per the forum guidelines.

New Map

It's a stunning map and really fun to play. Looking forward to the end fight!

New Cosmetics

Imperial Fists Champion - Seriously jaw dropping!
Space Wolves Champion - I was a little surprised with the choice of helmet, but it is accurate. Incredible details and just stunning armour.
Weapons and armour pieces - I want it! I want all of it! :)

Colouring tabard on Bulwark - yes, keep going with the rest too :)

Colour choices on pauldrons - So I noticed there are 3 colours available with you select a Pauldron in the armoury. The first is the actual pauldron colour choice, the second does nothing, and the third is the trim. What is the 2nd option supposed to be? It's not working.

More weapon choices for all classes

Simply great! love the fact that you can play with more choices of weapons.

I struggle a bit with the Heavy and the added Heavy Bolt Rifle. It is weak compared to other options.  And you run out of ammo fast. The Tactical ability to regain ammo is why it works on Tactical along with the many perks that add damage to it.
When swinging the weapon the blow simply have a hard time connecting, so you just stand there hitting air. (I would prefer the combat knife added)

My initial feedback would be to add the power sword to all classes. No reason not to as it's not that powerful and it makes sense if you roll as someone in command. If the heavy can wield Heavy Bolt Rifle, it should/could also wield a melee weapon.

Weapon Perks

In general I like the changes to them all.

I like how the tyranid and chaos perks are swapped out for more general perks.

The single greatest change are the Combat Knife perks rework. It's great! Go go go!

I'm not sure if the melee buffs on some of the Heavy class weapons actually works? Tried maxing out the perks for the Heavy class and melee damage and I can't tell the difference.

I have my reservations about the melee perks on the heavy.

Perks

Tactical - Radiating Impact perk is bugged. It does damage to your own team.

Prestige Perks

The following perks give too little to be useful:

Tactical:
Spare Power - Collecting an ammo box restores ability charge by 10%. There are very few available on higher difficulties and this would do nothing.

Assault:

Commendation - Reviving a squad member fully restore jump pack charge and all armour segments. Not really rewarding enough.

Bulwark:

Rally Point - Chapter banner removes negative effects. All other Prestige Perks are better than this one.

Sniper:

Boosted Recharge - Collecting and armour boost restores ability charge by 10% . I find 10% to be pointless. There are perhaps 3-4 in total on any given map and you share it with 2 other players. No, it's pointless.

The Sniper class really should have some of the same Perks as Tactical. Give the Sniper the perks Acuity and Skilled Supplier.

Heavy:

I am confused with all the melee perks. Are they even working? I can't tell. The stomp seems to at least hit something, but swinging your weapon seems more like hitting air 70% of the time.

I'm really unsure of the prestige ranks for the heavy in total. Seems to focus away from the primary weapons too much.

Restorative Capacity - Not sure this is useful at all compared to other options.

The charged attack perks, do they also add to the charged melee attack? (stomp) Clarification needed.

Final note and feeback regarding Prestige Perks.

It is my understanding perks and level gets reset once you go into prestige perks.

This is quite frankly bad for morale. I don't really care what other games have a prestige system implemented and how it works there.

Just let us play the game and keep the stuff we leveled and unlocked already. Keep it fun!

There's no need to reset a single thing at all

Fine if you want to have prestige perks locked behind a currency to be able to reset. But nothing else!

A near 50% currency charge of reset is quite expensive. Why wouldn't we be allowed to change them more often to suit different builds? If you lower the cost to 300 we can at least mix around and try stuff more often. Especially in the beginning. Otherwise we will just find the most generic onces that suit all builds and leave it there until the end of time.