Quoting would make the post far to long so these responses will be by name:
Angelus_dead- It was a great video and of course I saw the point. But what you did not mention is that BMX-Biker is lvl 4 and Angel Summoner is lvl 16. That is why BMX is not able to contribute.
IgorUnchained- Is that sarcasm I detect? I am sorry to break it to you but my reason is correct and yours are not. I am on Ghallanda and I guarantee that any mishmash combination oddlived builds he will be welcome into any group. And tons of other players are in the same boat. I only single him out because he was one of the first people I have seen play a character that makes people go hmm. (for the record I am not an oddlived fanboi, I am not in his guild, and really don't even know him, but his reputation precedes him.

)
Thrudh- I will give you the satisfaction that it is possible to unbalance a game, but if your going to use examples could they be more logical and plausible. The reason I am unhappy about the paladin capstone situation is because it seems to me it was toned down due to player feedback (whining) and I think it was totally unnecessary. I would have complained equally for other capstones being changed due to players complaining.
krud- You have a ligitamate gripe about S&B. I feel it would be solved with sheilds that were more powerful along the lines of greensteel. Both my melee are S&B and I still play them and still find groups. I don't think the answer is to make TWF weaker. If your not having fun with S&B, grab another weapon and change feats or re-roll entirely.
Everyone reading-
I will let everyone in on a little secret. If you are in a group and they demand a specific class or weapon, drop group. Good players will allow any class with any gear into thier group. If you join a group and ask what should I bring, the good players always answer the same, bring what's fun.
The good players have done just about every quest in game with "non-standard" groups.