So a few things I hope the mod does in the future... just a sort of random rambling wishlist of some things
-Expand the Xindi Crisis Event to allow the rest of the Federation Founders (or even theoretically any powers in the immediate vicinity or who have contact with United Earth) to get involved in some form or fashion, or at least be able to react if Earth gets blown up. Would also love it if when playing the Xindi you got to make a choice to pursue that path or not or even stand firm against the Earthlings.
-Removal of the Federation Founder bit at the beginning at least, as well as adding in an opinion malus for the Andorians and Vulcans who were rivals to each other (something involving a possible border war over the former Andorian colony of Weytahn would be a nice addition as well). As for the Federation Founder thing, have it be something that can pop up via event, especially if in coalition with one of the four founders of it (perhaps even make it so other neighboring minor races could get it as well if they join before the UFP is founded.) Main feeling is that given the sandboxy nature of even this game, the Founding of the Federation should at least be a little bit less likely than it normally is.
-Some more toggles, like one that modifies the Naval Capacity cost of ships, ranging from the current model to a reduced number to the Vanilla levels. Or one that allows minor races to expand or awaken more easily. Perhaps could even be used for the Federation founder bit.
-expanding on the Naval Capacity thing, perhaps taking the Star Trek Armada II approach and having the max NC available from the start instead,
-At least swaps out the stellaris generic pirate fleets for ST NH ship models and removes their generic stellaris weapons.
-Something I view as a possible inevitability-making greater use of stuff that uses things that only apply to the expansions (the pirates would be great examples of this)
-Minor races having lower NC but getting defensive bonuses as long as they aren't "awakened" to help ensure less likely to get chomped on. Also perhaps having a higher chance of accepting Vassalization or Tribute demands from major powers.