Are the maps in rebellion smaller than in trinity? when I set up a random map, they don't seem to be as large as the old random's used to be.
Though they "shouldn't" be I wouldn't be surprised if they were. If they are smaller it was probably done to optimize Rebellion better. Many things under the hood of Rebellion were changed, and redone for optimization purposes that are different from Trinity.
Hey, any chances of seeing the NX class in this Mod?
NO. This is a TNG+ era mod. What purpose would a 200+ year old NX serve? The Feds have plenty of canon ships from the movie, and TNG era. We use Alien ships from Enterprise to fill in gaps for the Klingons, and Romulans, but that is all we will use from that show.
Also we love Trek, but there is a lot of absurdity in post Roddenberry "Killer B" Trek (Killer B's = Berman, and Braga). We make no big secret that we are not big fans of Enterprise, Voyager, or Nemesis. Though to give Enterprise some credit it did get good in the 4th season, because the killer B's had nothing to do with the 4th season. Except for the finale which was atrocious. Unfortunately it was too late to save the show. The point being is that we are trying to keep as much of the Killer B absurdity out of the mod as possible. So you will NOT see the NX, Prometheus, Scimitar, 8472, Chang's fire while cloaked BoP, The 3 nacelle Ent-D, "Timeship's", or any "Ubership" used as a plot device. Nor will you see Retarded weak jack in the box Borg, A Borg Queen, Ships from an alternate timeline, or ships from the Delta Quadrant. Except for the Borg who have the means to travel the distance in a reasonable time.
We are not trying to sound harsh, but we have said many times before that if you want an NX era mod, TOS era mod, or the "Uberships" in the mod (Scimitar, Prommie, Wells, etc. etc.). Then add them yourself as a 3rd party add on, or make your own mod. Others are making Trek mods based on ST: Armada So what is stopping others from making an NX era mod? We have absolutely no problem with competition. In fact we encourage it.
We have a vision for this particular mod, and so far it is working very well. This IS your fathers Star Trek 
OK I'll get off my soap box now 