Don't get me wrong,I love the killzone series,but it's lacking in some departments. We all now,that there eventually going to come out with a killzone 4. I would like them to bring back the ability to make your own custom matches. That's what I like about the second one. I would also like some kind of co-op online. I would also like a better single player story. I thought killzone 3's storyline just jumped all over the place and was great at times and really lacking at other times. I would also like the ability to play as the helghast in the single player. Make a storyline based on there perspective. Then,I would like the standard things such as more weapons,game modes,secondary weapons,different classes. I also hate the medic drone,due to the fact that's it's way to powerful. So what do you want to see improved in the series? Please,I only want to hear from people that love the series and want to see it grow to it's full potential.

MORE KOOL STUFF!

As far as the single player campaign goes (won't touch any of the tweaks and changes that should be made to online since I simply don't play it enough to have a legit opinion) a proper ending would be satisfying.

It's not like this would mean the end of the series as Guerrilla has a huge amount of area to cover in the KZ universe/timeline and that's without even touching what many players would like to see: a Helghast campaign. I don't know if it's just me, but it seems like more players prefer the Helghast over the ISA even though they're the "bad guys" modeled after post WWI Germany. They have better gear and uniforms anyway.

Maybe if the Helghast hadn't been written to be so monstrous (using POWs for weapons experiments, etc.) and the entire Helghast/ISA conflict had been written to be much more ambiguous, this wouldn't be an issue to the watchdogs who would raise a red flag over putting the player in the role of what are basically Nazis.

An online co-op campaign would be a welcome addition. Making the co-op campaign the default with Bots for stand in players when playing solo would ensure that the campaign was the done properly without being simply an extra tacked on play mode.

Could be Spoilers!

Single:

Stahls father in the pod... (he will look like Visari and later we will find out he is his brother)

He will build new army to revenge end of Helghan planet and his son death.

He will start invasion on earth!

We are gona play as Hazmat Trooper with "green plasma" gun as a secondary weapon.

Online co-op,

Multi:

Actual vehicles and flying ships, not only exo and jetpack

Helghast hud like in K3 single, u know who you are instantly.

Customization from K2 (aparenly its coming to K3 with pach)

More ribbons and perks to unlock.

Unlock classes as u gain xp, like in K2

i want to see better textures and more coloful.

Deeper scenario than previous games.

 10  hours single player and more replayability.

KILL. MOTHERFUCKING. RICO.

Better story and story telling. If you are going to use pre-rendered movies, at least bump up the anti aliasing. You notice it more during cut scenes.

Space combat where you get to fly would be awesome.

Horizontal spliscreen for co-op campaign. Visibility is lacking with the vertical split.

For online a pve co-op mode defence and invasion against the helghast would be fun.

i dindnt think rico was bad in the 3rd game, the other games i agree

online co-op with longer hour of gameplay time for story mode with lots of rewards to unlock for more replay value