While the game is great (no doubt about it) there are numerous things in the game that.....frustrate me. Most of them can't be fixed but some could possibly be done in future patches. Most of these don't need to be solved straight away and are of low priority.

1."Manual/Quicksave function"
-ESSENTIAL, Crytek: the previous game (and most of your other games) always encouraged replayabily through the use of its massive maps. That was a major gameplay point in the original. By removing a manual/quick save system not only does it frustrate the player (especially if they die by some stupid glitch or by a crappy mistake), but it also DISCOURAGES replayibility. Say that I want to go through in area with stealth only. IF I GET DETECTED then I have to live with the consequences or kill myself and do it again. It should be UP TO US how we play. I don't care if the checkpoint only system was to raise the difficulty, it is a frustrating and is a stupid idea. Keep the checkpoint system but add the ability to manualy save and quick save please.

2."Advanced Graphics"
- THIS IS ESSENTIAL. The motion blur was starting to annoy me but I can't turn it down because of the limited graphics options. APPARENTLY you can change this sort of stuff via console commands, but it shouldn't even be that hard. It should already be accessable from the menu. I'll customise my graphics the way I WANT TO.

3. "Press Enter to Begin"
-This is completely unnecessary and all it does is show that what USED to be a PC exclusive, was developed on console first and then ported to PC

4."A Prone Feature?"
-I do not know if there is one in multiplayer, but a prone function for singleplayer would be of great help. Proneing is great for hiding from enemies under low cover, or it can be used when crouch isn't enough. Prone could easily be activated by holding down the crouch key.

5."No Map in the Campaign?"
-I'm not talking about a minimap, I'm talking about a full map like in the original Crysis. With, this you would be able to easily zoom in, see tactical opportunities and observe the layout of an area to plan your attack. Such a thing may be too complicated for consoles so it may have to be a PC feature only. Not essential but it would be nice

6."No hud options? No recticle changes?"
-It's a little dissapointing to see that these didn't make into the final product. It's the little things that matter, and by removing these it ruins our ability to customise the game to our liking. I understand why we can't change the suit voice in singleplayer (because your suit is now used to introduce objectives etc.) but things like simple iron sights and colour changes are all little things that we miss.

7."Unresponsive Suit Menu?"
-In the campaign, the suit menu appears to be unresponsive to my mouse movements sometimes. I don't know why but occasionally when I go to access my visor, it gets stuck between armour and stealth. It's hard to explain but it is annoying and so now I'm forced to remember which keys are which, and use the hotkeys.

8."Strength?"
-Picking up stuff doesn't do much good anymore. I threw an explosive barrel (no, I was not in armour or stealth mode) and it went not very far (compared to the original game). So throwing things ends up being completely useless.

9."Picking up Humans"
-It seems harder to actually pick up people this time. What's worse is that when you throw them at someone it seems to have NO EFFECT. This is sad because one of my favourite things in the original game was to pick someone up and throw him at his mate. Also why does holding someone drain my nanosuit? Completely unnecessary. All it does is frustrate.

Summury
The most important things on this list are
:Manual/Quicksaves
:Advanced Graphics Options

Please crytek pay attention to this list. It is not asking for too much (nothing that wasn't in the original game)