Simple mod that added +4 to planet limit (9 core planets for most forms of goverment) and +10 to fleet limit, so you can defend your early expansion from aliens and pirates. Number of leaders have same limitation as in unmodded game. "Balanced" for game on 800 stars map with max number of empires. Extraction path: ..\Documents\Paradox Interactive\Stellaris\mod
Updated for game version 1.2.1.
All this news strings and little game ballance changes in vanilla game should be active now.
Also, base cap for leaders inreased to 13 (+3), so you should have a little more admirals and generals now.