Well I'm hoping the CounterStrike2 engine works on all of those problems. I still want there to be customization (different styles of gameplay, customizeable weapon skins, etc.), but they need to work on graphics, physics, etc. I mean, you can run faster with a knife out than you can with a shotgun, even though you're carrying the same amount of weight in each case...
Grenades still are COMPLETELY underpowered, and quite frankly it's just awful.
The issue of poor hitboxes has never really been addressed...
And bunnyhopping needs to be stopped.