Suggestion about assimilation, pops and warfare/elections/politics

First of all: english is not my first-language: please excuse my choice of words (partially using translator)

Assimilation:

The problem: In my present game I'm in round 185, play the Sophon, and have gathered a system with 38 pops in the center of the galaxy. The growth and spread of influence is extrem fast and big and the other races are rapidly assimilated by this. The assimilation process is also much to fast (about 5 - 10 rounds/system). So if you are the first who can research this (in era 3 - cultural invertics), you are pretty unstoppable and it is enough to defend.

suggestion: I think it should be not be possible to assimilate (at least major) factions - I think the influence should reduce the enemys fids and make them unhappy. The growth of the sphere should be slower.

Population:

The problem: I know it is somewhat difficult to deal with such a subject in our day, but to have no (or very little) influence on racial growth is frustrating. Even if the majority of the population belongs to a certain race, is a ratio of approx. 50:50 in the neighboring systems of the homeland. With a gap of only one system, then it is 100%.

suggestion: Make it possible to choose who is the primary race and who settle the systems. Give also the possibility to change the population composition and to transport pops to other planets.

Warfare/elections/politics:

The problem: The influence of production (buildings) on the political parties is much too great (in a quest, that's okay). With increasing duration of the game, the influence of the military parties is more than just overpowering. I did not manage to get the researchers close to the leadership of the militaristics. If the people are satisfied with the work of the government anyway, why should the party landscape change in spite of this? And at some point you have to come to a war. This is the charm of expansion and conquest of space. You just have to build spaceships, whether for attack, or for defense. You want to see how they fly and fight. In the present case, only the party of the militarists would be needed from a certain area. It would be very unfortunate if one had to change his playing style irrevocably.

suggestion: We need more influence to the political parties, not only by bribeing or discrediting, also by satisfying the people. I think, if you do a good job, you do not necessarily have to change the side. More choice at the Academie would not be bad as well.

I would be interested in how you think about these things and look forward to your answers.