I think we basically agree and you got my point - egos. You just have a disliking for this stupid 'FAIL' tag and I will have to completely agree with you on that. Hence your justified prejudice with the word 'failure'. maybe I should have used another word.Not touchy at all, just having a discussion.
My assumptions of your criteria were based on this statement by you:
"Mostly but not always doomed to failure due to arrogance, self overestimation and enemy underestimation. The vast majority of those players fail to recognise that their success in other worlds was not due to non-existing skills required to play TW, but down to luck and circumstances."
The failure that I believe most people speak about is the ego aspect. I think it's an utter failure when all the big heads can't get along, and the in-fighting kills a tribe. That speaks much more about the individual players personalities, which is what I consider "FAIL!" as described in my second paragraph. Your second two points I also see as failure. More specifically, the people that shit talk on the forums and then get owned in game. That's the perfect definition of failure to me.
However, not all losses can be categorized by overestimation/underestimation. Legitimate war in which they put up a good fight and lose is simply a loss, not a failure. Yes, they failed to win but they aren't "failures" in what I believe to be the current usage of the term. (For all you idiots that are going to give me a definition from dictionary.com, please stop. I know the definition, thanks) On the forums, you see the fail whale thrown around, and every dumb picture with "FAIL!" on it, which is now used as derogatory term. I just see a separation nowadays due the use of the terminology. But maybe thats just me nit-picking.
I have nothing against premades. I've had lots of fun with premades before and they certainly have the 'cohesion and 'fun' elements lacking in new tribes.
If you go back to older worlds though you'll find that when you get down to a few 100 players most of the top ones have started the world as noobs. They premades have also completely disappeared as have the tribes from core. The rim Rules