Not enough tanks. game is not friendly for them. Randoms do not make a lot of damage and some times play not really good, so it is understandable. The same time new tanks can be not respected and can be even kicked from group or get very bad words to there adress - that dissapoint them.

Starting of what they need to do to what they need to gear.

It was very popular 4-6 years ago when i only came to the game and after some years and a lot of incedents - it is less such people now. (And better do not ask why - ... but i always can tell it is long and interesting for me storys - that may be will not be interesting to any body else )) )

A lot of people - like to give "empty useless advises - no one even ask them for" - and as you can understand they will not help. But no one of them will nor really go and help, because other way they see that their advices is nothing more than garbage.

Starting from "self proclaimed eletists - high end content rulers/makers and etc" ending to casuals.

What is casual ? It is player who do his daily quests and not a lot of interested in doing some other content sereosly (or may be some times may be show interest to it).

Starting from - why a lot of players are not interested ? because in a lot of more older games it was not such a problem.
Why such problem appear now ?

Because of "eletists" - i describe it like: "not a high skilled players - that think about them selves to much".
Such players can have a little more expirience in other games - but can not "achieve" some thing in it - and on start of another game have more EXP in it than players with no exp - or plays the game longer (from start).

Such players need to pass content when really skilled members of their groups leave. They need replacement - but can not find it. Really skilled players will not play with them, so their next option is try to show how good they are from position of "achivment / better gear / more level / and etc.".

They not only need new people - they need players with game style they are comfortable with. Because their core players who they play before - plays the same way. So they try to force people play the way they need from them. Try to nerf other players game styles / sets / skills and etc.

They can not show their skill - because they often do not have it. But it is option to link achivment or show DPS.

So they often try to make from this their dominance leadership system.

In games where PVP was part of PVE - such players get revenge from more exp players so they can not exp and leave the game - so game population was more healthy. In games where PVP and PVE is seporated - such players do not often go PVP - i think you understand why ? )

And i concider my self PVE player - but to even PK other players for me as a player was a normal thing to do.

More exp players clearly understand that you can not force others to do some thing. But if you as a player are really better in some thing - other players can be interested in it and one day they ask you to learn them for it.

Look now on current TESO players - "I Have DPS / Use buff sets" it only show that a lot of players do not even see in them some thing valuable - thats why they need in self promotion all the time. And they can not do a lot of thingth - and even can not learn and help people. Because to help - you first need to be able to do it yourself.

Thats how I see the situation. And if current "end game community" - is so small - than just may be people are not interested enough to play with them. Because if some game really have skilled and good end game community - even including the fact that raids are much harder in some games = people have no problem. A lot of player play it and they not even need for special word to name themselves - like "end game elit super end game community". because a lot of players do it.

So all I try to show current "elit end game super duper community" - is = ill = a little )))

So it is not really strange that it is only 1 % and is not a lot of popular.

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If you want more tanks - better DD - show first that you deserve it. Help tanks, learn your friends and etc. First learn yourselve first to do thinks you try to learn others ! Than you need not even learn any body - if others will be interested they ask you themselves. Or becomes better just looking and playing with you.

To just walk and promore DPS / Sets and etc ... it looks like:
I have bad smartphone that i need to sell for a big prise. I walk everywhere and promote it.

It is strange that one day people who are smart enough will send you some where ... in a long jorney ) ?

With low lvl players - if you do more DPS - you really will not need taunt because you get agro by doing damage.

In nRandoms now is even more players with good DPS than in vets - because revard is the same and it is much faster.

So a lot of players go vets for a reason they need as example monster helmet and are first time their.

Than healer need to have a good HPS, and if so - it sounds a little strange if some one die )))

But healer becomes + tank to his main role

Just as example:

https://youtu.be/aeDsOVw9wrE

So if you say that tank need some thing in random - may be you will not just get any or will be kicked from it - because exp player can not even say such nonsence )

More specially in nRandoms.

Or better if you want for tank some specifics - go and tank yourselve ))) It will solve all of your problems )