So... If I understood well all of these stuffs from this Dev discussion...
I played this game on a wrong way. In pre-2.0, I liked to play with my heavy destro, TAC (Aion) and my favourite dreadnought ship. What I was hoping for to be able to have at least 2 variants of my Aion in my fleet for different situations, have a good destro with 2 different configurations to be able to adapt to the current battle.
And maybe a heavy, or a heavy healer...
Hmmm... looks like I was wrong... according to the Devs I MUST have one ship from each class.
Just because of “rock, paper, scissors” and/or because of "...serves to guide them toward assembling a diverse fleet they might not have put together otherwise..."
Thanks to opening my eyes!! I was totally wrong! I wanted to put together a fleet from ships which I enjoy to play with... ships where I like the playstyle (and most probably I could be a good player).
Thanks again, I understood now! I MUST play with ships which are not for me, I simply don't like them and I really don't want to learn to fly. I MUST grind through the snipers just to achieve the "right" (or "?gift?") to use heavy destro.
...And the explanations are “rock, paper, scissors” and "diverse fleets"...
Well... Why don't you give your players the "Freedom of Choice"?
I bet several "rocks" are playing the game... and several "papers"...
Some "scissors and rocks" also playing it... but very little number of “rock, paper, scissors”.
It's simple... you can't force everybody to be a healer / tank / flanker / sniper at the same time.
Everybody want to play with their favourite classes / favourite playstyles.
My conclusion : uninstall. Maybe I will check back later.
To the ones who compare this game to WoT :
I played WoT...for 5 years...and I enjoyed it. So I don't care about grinding, I don't care about any tier systems...
But in WoT you are never ever were forced to play with a "sniper" just to achieve a "medium".
Or you are never ever were forced to play with "light" to achive a "heavy".
You have the FREEDOM of CHOICE! So you can go grinding on a line/playtyle which you enjoy!
I really wish Good Luck for this game (!not an irony!), but at the moment I can't accept this vision, developement going in to the direction what I don't like. 
Last words... Listen to your community... large amount of good ideas came up here in the forums since the Progression 2.0 came out. But this Dev Talk just tried to explain that everybody is wrong and we tried to play this game on a wrong way... and according to the devs it is our fault because we misunderstood the goal of this game :S