No, this isn't the "problem" I'm talking about. If you read my post more closely I stated that it seems everyone except the Warlord and Cleric seem able to "shine" without having to depend on another... To win encounters teamwork is definitely important, but a lone Rogue or Ranger can do massive damage and get a high five...A Wizard can clear a path of minions in one attack and Fighters/Paladins can hold back monsters with marks and challenges. The Warlord/Cleric need others to have a shinning moment.
I am not sure I entirely agree. I have the feeling that others also shine more in teamwork. But you're certainly correct that it's more important for Leader-types. Their "extra effects" directly go to allies (temporary hit points, attack bonus and stuff), so you can't shine alone.
I didn't say playing a Warlord was no fun, so please don't get defensive.
Oh, I didn't mean to appear being defensive. (Sorry if I came off that way.

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what I did note was for the designers to tote each class being balanced and fun in combat, the Leader types have a pretty big restriction on their "fun" compared to the others. Whether this is good or bad depends on your playstyle, but it reminds me of the buff/healer cleric everyone complained about. YMMV of course
I think the reason why it is this way because that's how the role "works". To be a leader, you must rely on others - you must have someone to lead. It is an inherent trait of the class, I think.
For the record, I never enjoyed playing Clerics. I can't point down why that is the case. I didn't enjoy the self-buffing parts, and I didn't feel good with the debuff/save or die effects either, nor with most of the buffs itself, too. But I can't point down what it is exactly that I don't like.
I found the Bards, despite their general inferiority, always more interesting. They have a stronger out-of-combat presence, and in-combat, their benefit to the party was always clearly visible to me (even if it was, overall, probably worth less then the contribution of a Cleric)
Maybe it has nothing to do with mechanics in my case. Maybe I am just not into playing a priest/believer. I am not sure I like the 4E Cleric, either. Though I think I could enjoy the Paladin. But I still prefer the Fighter above him.