Not a huge fan. I like it in moderation but a lot of these games are adding the feature as the only way to complete the level. I don't mind using cover as it makes sense but sometimes the trade off is that the enemies are overpowered, so that when you decide to chase down an enemy you get torn apart. I found that Killzone 2 found the ideal balance you could cover and do it well but you were also allowed to run in the open for a little while before the screen greyed out.

In moderation i would enjoy this feature more if less games used it. Often i find lots of games use it to make their games longer as players are forced to spend upwards of 10 minutes stuck behind a knee high wall, which brings me to another issue uninspired cover. Why since cover systems have been added have battlefields now been littered with random knee high walls, to me it doesn't make sense. It requires more work but in moderation it works.

^ Agreed, I also found that Rainbow Six Vegas offered a brilliant cover system too.

good. i got pissed so many times during COD4 that theres no cover system, and i had to just manually hide behind things and would end up still getting hit sometimes. on Veteran a couple hits and you are dead. it would really be nice if Modern Warfare 2 had a cover system but i know it wont. R6 Vegas had an awesome cover.

conversely, Halo didnt have one either, but your energy shields basically are your cover. if you cant kill the enemies by the time your shields are down, cover wont do much good anyway.

Depends on the game. Arcadey run and gun shooters like Call of Duty, Halo, Resistance don't suit cover systems. Where as more tactical shooters or 3rd person shooters do.