We don't.
We don't have strengths.
We have weaknesses, which are yet to be offset, in any way, shape or form.
Being able to cast HoF on a teammate once in a while is no strength
Being able to hardcast FoLs is no strength aswell
But having no selfdefence, no dispel protection, no combat healing besides said hardcasting, no means to get to target, these are just a few weaknesses we have.
I am yet to be educated and enlightened how can any sane person, moreso a "professional" developer of such scale as WoW devs surely are, might view anything we currently posess as enough of a strength to offset anything of the weaknesses I mentioned above.
And I didnt even list a half of or gone into detail or spoke about talents or traits.
That is why we are assuming Ret SHOULD HAVE been compensated through more damage and defences.