Comparing idol and pot loss from competing worlds and non-competing worlds is apples to oranges. Yes if garanak spawns and a few hours later you have 3/4 of the top end players log to orderly kill then you won't need any hastes pots or idols. Having a 2-3 way fight every spawn means many 6*kills get pretty brutal due to fewer players per clan and the need to start dps instantly on spawn. Adds are often all up as no dps team wants thier skills to be on cd when the boss spawns.Blunt you shouldn't be using all those idols on 200.6. We all use about 2-5 max.
I agree, all lock groups compromise of rogues, then when clan looses a lock blame gets shunted to those rogues who aren't there even though they need to do stuff too.
As far as hating your class, or dreading a nerf that will put you at a big disadvantage to other classes, I chose to simply level all 5 to endgame. It was the main reason i didn't go with more of a single class. Added benifits include being able to use any in game item and since I'm only ever in groups group skills become much more useful.
Something does need to be done about all rogue teams for locking though. It would be much better for some kind of mixed group to be the best and thus most preferred.