I find myself in a funny position lately. Immediately before 6th ed I was full of optimism. More variety, more interesting games and one of the things I hoped for most of all, a boost to close combat. But now 6th is out and its not only fallen short of what I've hoped, but kicked a lot of things I loved in the @$$. All the penalties to close combat (overwatch, furious charge nerfed, multicharging nerfed, can't assault from reserve) have messed up close combat thoroughly, while shooting hasn't suffered at all. In fact it's become better now that you can snapfire when gone to ground or when youve moved with a heavy weapon, and most of all, cover saves are worse.
The biggest problem though, is flyers.
I'm still having trouble believing my eyes where flyers are concerned. In 5th I played against leaf-blower hybrid lists, I played against chimera spam and all manner of other cheese. But you know what? As tough as those lists were, you could at least kill individual elements. A grey knight rifledread still died when you deep struck a meltagun next to it or drove round the corner in an attack bike or whatever. A medusa, as horrific as it's strength 10, AP crazy gun was, was still just an open topped, armour 12 vehicle that any railgun, seeker missile or powerfist could put a hole in. Now, someone turning up with 9 - 12 flyers can fully expect most of them to survive to the end of the game while single handedly destroying your whole army.
Now we have flyers and 3/4 of the races don't have them, while 2 of the races have the ability to spam them to such a degree that no one can deal with them. I'm not even going to attempt my local tournament this year because I simply don't want to buy 3 hydras and an allied detachment to deal with them. Someone suggested to me the other day that fateweaver might offer some kind of defence against flyers. Well, when he gets shot with 27 twin-linked lascannons or 32 twin-linked tesla weapons, I don't think he'll be saving you from anything.
6th ed has really destroyed 40k for me at the moment. It'll probably balance out after a while (in 1 to 3 years!) but why on Earth should we have to suffer until then? I'm out, I quit. Privateer Press, here I come.