2. Breen Battleship ?

9 Typhoon Class!

forgot about the typhoon.

10. Ambassdor Class

11. Releativity ship. maybe

First of all are you asking for these ships to be given to players to use or to play against?

If you are saying against like you say in your post the Breen Capital ship is in the game already as well as the Schmitar.
If you are asking that they be given to players well thats just silly. Starfleet would never use another race's ship.

Second of all. You will never see the JJ star ships in the game. Paramount will never give those up and even if they did its not canon to the current STO story line since its an ALTERNATE TIMELINE. That's where the the mistake is made a lot. The Galaxy X was seen by Picard so of course he could have mentioned its design to the ship yards.

Its now where nearly silly when the devs start to introduce other faction into the game and they will evenutallly.

There is no proof that was an actual racial ship they just assumed it was the enemy that attacked that planet because they had no data on those ships in the episode and that ship was created by the creature on the planet trying to scare the enterprise away.

did the crazy alien make that species extinct anyway?

so if one of their ships did survive its most likely a drift :O

The dreadnaught class was also in an alternate timeline, they can add the ships if they want to.

It wasnt really an alternate timeline. Technically Picard was just shifting in points of time of his timeline. And he saw the ship and remembered it and probably told Star Fleet about its design. So its possible they turned old Galaxies into the dreadnought by 2409.

JJ's ships are in the past only. Nero change the events of that timeline by destroying the Kelvin. So its an alternate timeline. Spock never travels back to his original time with the ship designs.

Since STO takes place in the original timeline of the original star treks then JJ's ships would never have been seen. STO is not the future of Star Trek 2009. Its the future of Voyager, DS9, TNG, and TOS plus all those movies.

You're totally missing the point.
They could add the Dradnought Galaxy since it was in the show and CBS has the rights to the shows and the first ten movies and Cryptic bought those rights.
Cryptic did not buy the rights for the 11th movie which is also not owned by CBS but by Paramount.
So it's simply not possible to use stuff from it.

As for the alternate thing, well at least it was a possible future meaning a Galaxy class could in theory be modified to tha design.
Stuff from the Abramsverse is different because it's not from a possible future but from an alternate past.
And since there is only one past but several futures the rules are not the same for them.

Ho often do you plan to bring that up?

Like dee said: We KNOW for sure that the constitution was not build in that Abrahams-way.

I dont thing that Stafleet releases a whole ship lane based on some vage impression that a timetraveling captain (who is not even an enginier) had by looking at some lcars MSDs while being focused on the minor issue of... well saving the universe .... especially when he suffered form the symtoms of a mental illness during that incident.
Also... Picard (unike Janeway) would fur sure not violate the temporal directives.

The GX can VERY WELL be modified by the same people the same way it was modified in the AGT timeline.... there is no indication at all that anything that effectet the difference between that timelines effectet those people or the whole ship development progress in any way.
All that we know is diffrent is the ent d distruction, the romulan empires state as being conquered by the klingons (wich very well may be happened shortly before and conectet to the Hobus explosion) and SOME personal fates.

Starfleet wants to keep old ships usefull... they plan how to refit them and chose the refit that makes sense.. And that one is simply the one that is most efficient... no matter in what timeline since that ship that WAS refitet is in both timelines the same.