Inter-species reputation

[Massac]

I'm playing my first game and really enjoying it. Thanks for the hard work!

During my first game, I followed the tutorial and brought space faring to the Peltians, Andors, and Skylaxians.  (Side note: deliver the spacefaring tech missions are super hard/frustrating early on because of the huge amount of little ships, but become super easy once you get the afterburner.)   I'm working to get the Peltians - Andor relationship and the Peltians - Skylaxians relationship both to 90, so I can start the federation.  So far, I've only found 3 ways to improve the inter-species reputation.

Ways to improve inter-species reputation:
1. Trading - This seems to work really well.  I've only had the Peltians and Andorians trading for a short time and already they have over 60 reputation with each other.  My main problem is that the Peltians only have one moon that the Skylaxxians don't need.  In fact, the Skylaxxians don't need anything from the Andors either.  There's no option for trading with either race.
2. Gifting tech from species to species- This only improves relations by 2 points per tech given.  So I would need to get the Peltians to give the Skylaxxians 45(!) techs in order to get them to 90.
3. Dispatch missions- The improve relations with another race missions only improve reputation by 0.2 per month.  So it would take 450 months or 37 years of doing nothing but this dispatch to get up to 90.

So here's my question: are there other ways to improve inter-species reputation that I have not discovered yet?  Does a lack of moons severely limit the negotiation abilities of a race? Should I just be flexible to the randomness of my map and realize that Peltians and Skylaxxians will never like each other enough to from a federation?

In fact, if trade options are so critical, is having a race colonize extra moons dangerous?  If the Skylaxxians only colonized one moon, maybe they would still need the Peltians' stuff and my problems would be gone.  It's interesting that trade could be so critical that the player should support a "don't ask, don't tell" policy to extra moons if he's happy with his current trade situation.

[Draco18s]

Get both race's RCI values very high.

Also, #3 only works up to 30, at which point it only impoves one race's relationship (then you have to go to the other planet) and even that caps out at 50.

[Josep]

How does getting both races' RCI values very high help?

[Draco18s]

How does getting both races' RCI values very high help?

There's a "mutual admiration" or something bonus when two races see each other keeping their planets looking nice.

[kasnavada]

If you have both relations between them at at least 50, they get a "but they like us" bonus which rises at about 4-5 / year I think. I don't have the real number.

Once you've created the federation, you can ask other species for help, that's "+5 / +5" bonus relation between both races.

The boarine (I think ?) can give a 14/14 bonus for a large amount of money between 2 races too. Somewhere in the menu. Te leader must have "solar unity" though, so it's not really much of an option.

[Necro]

i'd like the type of tech gifted to have an impact - a aggressive civilization would give more influence for weapons technology than a peaceful one, or a civilization in negative say economy would give more influence for tech that improves their economy etc.